Name. AP Physics 2 Summer Work. Fluids. Directions

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1 P Physics 2 Summer Work irections Fluids Please complete all multiple choice. Questions are arranged by topic. You may look back at your Physics Honors notes for help or consult for help on specific topics. SHOW LL WORK. You will be graded on the work you show. Simply circling all the correct answers will earn NO credit. 1 Two substances with a density 2000 kg/m 3 and with a density 3000 kg/m 3 are selected for an experiment. If the experiment requires equal masses of each liquid, what is the ratio of substance volume to substance volume (V /V )? 1/2 1/3 2/3 3/2 3/1 2 The density of a substance is ρ, the volume is V, and the mass is m. If the volume is tripled without changing the density, what is the mass? m/3 m 3m 6m 9m 3 perpendicular force is applied to a certain area and produces a pressure P. If the same force is applied to a twice bigger area, the new pressure on the surface is: 4 There are two round tables in the physics classroom: one with the radius of 1 m the other with a radius of 2m. What is the relationship between the two forces applied on the tabletops by the atmospheric pressure (F 1 /F 2 )? 2P 4P P P/2 P/4 1/2 1/4 2/1 4/1 1/6 1

2 P Physics 2 Summer Work 5 Three containers are used in a chemistry lab. ll containers have the same bottom area and the same height. chemistry student fills each of the containers with the same liquid to the maximum volume. Which of the following is true about the pressure on the bottom in each container? P 1 > P 2 > P 3 P 1 < P 2 < P 3 P 1 < P 2 > P 3 6 What is the gauge pressure at the bottom of a pool 3m deep? 30 Pa 300 Pa 3000 Pa 30,000 Pa 300,000 Pa P 1 > P 2 < P 3 P 1 = P 2 = P 3 7 Which of the following scientists invented a mercury barometer? 8 car driver measures a tire pressure of 220 kpa. What is the absolute pressure in the tire? laise Pascal vangelist Torricelli medeo vogadro Robert rown James Joule 321 kpa 119 kpa 0 kpa 101 kpa 220 kpa 9 In a hydraulic lift the small piston has an area of 2 cm 2 and large piston has an area of 80 cm 2. What is the mechanical advantage of the hydraulic lift? 10 hydraulic lift is used to lift a car. The small piston has a radius of 5 cm and the large piston has a radius of 50 cm. If a driver applies a force of 88 N to the small piston, what is the weight of the car the large piston can support? N 88 N 8800 N 8.8 N N 2

3 P Physics 2 Summer Work 11 Three blocks of equal volume are completely submerged into water. The blocks made of different materials: aluminum, iron and lead. Which of the following is the correct statement about the buoyant force on each block? (Ρ aluminum = 2700 kg/m 3, ρ iron = 7800 kg/m 3, ρ lead = kg/m 3 ) F aluminum > F iron > F lead F aluminum < F iron < F lead F aluminum < F iron > F lead F aluminum = F iron = F lead 12 piece of iron has a weight of 3.5 N when it is in air and 2.0 N when it is submerged into water. What is the buoyant force on the piece of iron? 3.5 N 2.0 N 1.5 N 1.0 N 0.5 N F aluminum > F iron < F lead 13 Physics students use a spring scale to measure the weight of a piece of lead. The experiment was performed two times one in air the other in water. If the volume of lead is m 3, what is the difference between two readings on the scale? 14 wooden block with a weight of 7.5 N is placed on water. When the block floats on the surface of water it is partially submerged in water. What is the weight of the displaced water? 0.5 N 5.0 N 50 N 500 N 0 N 5.0 N 5.5 N 6.0 N 7.0 N 7.5 N 15 n object with a density of 800 kg/m 3 floats on water. What portion of the object is submerged? 16 wooden block with a weight of 9 N is placed on water. When the block floats on the surface of water it is partially submerged in water. What is the volume of the displaced water? 1/16 1/8 1/4 2/5 4/5 5x10-4 m 3 4x10-4 m 3 3x10-4 m 3 6x10-4 m 3 9x10-4 m 3 3

4 P Physics 2 Summer Work 17 Water flows at a constant speed of 16 m/s through narrow section of the pipe. What is the speed of water in the section of the pipe where its radius is twice of the initial radius? 18 Venturi tubes have three sections with different radii. Which of the fo 16 m/s 12 m/s 8 m/s 4 m/s 2 m/s P 1 > P 2 > P 3 P 1 < P 2 < P 3 P 2 < P 1 < P 3 P 1 < P 2 > P 3 P 3 = P 2 = P 1 19 Water flows through a horizontal pipe at a speed of 5 m/s and pressure 5x10 5 Pa. The pipe narrows and the water speed goes up to a 25 m/s. What is the pressure in the narrow section of the pipe? 20 n open bottle is filled with a liquid which is flowing out trough a spigot located at the distance 0.5m below the surface of the liquid. What is the velocity of the liquid leaving the bottle? 2x10 5 Pa 4x10 5 Pa 8x10 5 Pa 8.25x10 5 Pa 11.5x10 5 Pa 0.7 m/s 2.2 m/s 3.13 m/s 9.8 m/s 19.6 m/s Optics 21 When an object is placed in front of a plane mirror the image is: Upright, magnified and real Upright, the same size and virtual Inverted, demagnified and real Inverted, magnified and virtual Upright, magnified and virtual 4

5 P Physics 2 Summer Work 22 point object is placed in front of a plane mirror. Which is the correct location of the image produced by the mirror? 23 candle is placed in front of a concave mirror. The image produced by the mirror is: Real, inverted and magnified Real, inverted and demagnified Virtual, upright and magnified Virtual, upright and demagnified Real, upright and magnified 24 candle is placed in front of a concave mirror. The image produced by the mirror is: 25 candle is placed in front of a concave mirror. The image produced by the mirror is: Real, inverted and magnified Real, inverted and demagnified Virtual, upright and magnified Virtual, upright and demagnified Real, upright and magnified Real, inverted and magnified Real, inverted and demagnified Virtual, upright and magnified Virtual, upright and demagnified Real, upright and virtual 26 candle is placed in front of a convex mirror. The image produced by the mirror is: Real, inverted and magnified Real, inverted and demagnified Virtual, upright and magnified Virtual, upright and demagnified Real, upright and virtual 27 very narrow light ray strikes the surface of a concave mirror as shown on the diagram. Which of the following diagrams represents the reflected ray? 5

6 P Physics 2 Summer Work 28 very narrow light ray strikes the surface of a concave mirror as shown on the diagram. Which of the following diagrams represents the reflected ray? 29 very narrow light ray strikes the surface of a convex mirror as shown on the diagram. Which of the following diagrams represents the reflected ray? 30 light ray is incident obliquely on the surface of a glass block. Which of the following diagrams represents the refracted ray? 31 light ray passes from glass into air at an angle less than the critical angle. Which of the following diagrams represents the refracted ray? 32 light ray passes from glass into air at the critical angle. Which of the following diagrams represents the refracted ray? 33 boy is trying to catch a fish from a lake. Which of the following diagrams represents the image of the fish observed the boy? 6

7 P Physics 2 Summer Work 34 Which of the lens or lenses is the converging lens? 35 Which of the lens or lenses is the diverging lens? I and V II, III, IV II and III III and IV IV and V I and V II, III, IV II and III III and IV IV and V 36 n object is placed in front of a converging lens at a distance greater than 2F. The image produced by the lens is: 37 n object is placed in front of a converging lens at a distance between F and 2F. The image produced by the lens is: Real, inverted and demagnified Real, inverted and magnified Virtual, upright and magnified Virtual, upright and demagnified Virtual, inverted and magnified Real, inverted and demagnified Real, inverted and magnified Virtual, upright and magnified Virtual, upright and demagnified Virtual, inverted and magnified 38 n object is placed in front of a converging lens at a distance less than F. The image produced by the lens is: 39 n object is placed in front of a diverging lens at a distance between F and 2F. The image produced by the lens is: Real, inverted and demagnified Real, inverted and magnified Virtual, upright and magnified Virtual, upright and demagnified Virtual, inverted and magnified Real, inverted and demagnified Real, inverted and magnified Virtual, upright and magnified Virtual, upright and demagnified Virtual, inverted and magnified 7

8 P Physics 2 Summer Work 40 light ray is incident on a glass prism with one angle of 90 ånd the other angle θ. If θ is greater than the critical angle for glass-air boundary, which of the following is correct for the emerging ray from the opposite face of the prism? lectric Force and Field 41 Which of the following is the correct force between two negative charges? 42 Which of the following is the correct force between two positive charges? 43 Which of the following is the correct force between one positive charge and one negative charge? 44 plastic rod is rubbed with a piece of animal fur. The plastic rod acquires a negative charge during this process. Which of the following is true about the charge on the piece of fur? It acquires a positive charge but greater in magnitude than the rod It acquires a positive charge but less in magnitude than the rod It acquires a negative charge but greater in magnitude than the rod It acquires a negative charge but less in magnitude than the rod It acquires a positive charge with the same magnitude as the rod 8

9 P Physics 2 Summer Work 45 positively charged rod is brought close to one end of a neutral metallic plate. What type of charge is induced on the closest side of the plate? 46 positively charged rod is brought close to one end of a neutral metallic plate. What type of charge is induced on the farthest side of the plate? Positive Positive Negative Negative Neutral Neutral It depends of the separation between the rod and plate It depends of the separation between the rod and plate More information about the type of metal is required More information about the type of metal is required 47 positively charged sphere is brought close without touching to a neutral sphere. Sphere is touched with a grounded wire. What is the charge on sphere after the wire is removed? 48 neutral electroscope is touched with a negatively charged rod. What is the charge on the electroscope after the rod is removed? Positive Negative It stays neutral It depends on the contact time It depends on the material that sphere is made of Positive Negative It stays neutral It depends on the contact time It depends on the material that the electroscope is made of 49 neutral electroscope is touched with a positively carged rod. fter the rod is removed the electroscope is charged positively because of: 50 negatively charged rod is brought near an uncharged, grounded electroscope. Which of the following statements is true? Induction onduction Thermoemission Photoemission None from the above The positive charge flows from the electroscope to the ground The positive charge flows from the ground to the electroscope The negative charge flows from the electroscope to the ground The negative charge flows from the ground to the electroscope The electroscope stays neutral because the rod doesn t touch it 9

10 P Physics 2 Summer Work 51 positively charged rod is brought near a charged electroscope. s a result of doing this, the electroscope leaves move further apart. What is the charge on the electroscope? 52 negatively charged rod is brought near a charged electroscope. s a result of doing this, the electroscope leaves move further apart. What is the charge on the electroscope? Positive Positive Negative Negative It is neutral It is neutral It depends on the distance between the electroscope and the rod It depends on the distance between the electroscope and the rod It depends on the material that the electroscope is made of It depends on the material that the electroscope is made of 53 positively charged rod is brought near a charged electroscope. s a result of doing this, the electroscope leaves move closer to each other. What is the charge on the electroscope? 54 Two positive charges with magnitudes 4Q and Q are separated by a distance r. Which of the following statements is true? Positive Negative It is neutral The charge with a greater magnitude exerts a larger force on the small charge The charge with a greater magnitude exerts a smaller force on the small charge It depends on the distance between the electroscope and the rod The forces on each charge are the same in magnitude and opposite in direction It depends on the material that the electroscope is made of The forces on each charge are the same in magnitude and pointing in the same direction 55 Sphere is charged positively and sphere is neutral. The spheres are brought near each other. Which of the following statements is true? 56 Two positive charges Q 1 and Q 2 are separated by a distance r. The charges repel each other with a force F. If the magnitude of each charge is doubled and the distance stays unchanged, what is the new force between the charges? There is no electrostatic force between the spheres since one is neutral There is a repulsive electrostatic force between the spheres F 2 F 4 F There is an attractive electrostatic force between the spheres F F There is a repulsive electrostatic force applied only on sphere More information is required 10

11 P Physics 2 Summer Work 57 Two positive charges Q 1 and Q 2 are separated by a distance r. The charges repel each other with a force F. If the distance between the charges is cut to one-fourth, what is the new force acting on each charge? 58 Two charges Q 1 and -Q 2 are separated by a distance r. The charges attract each other with a force F. What is the new force between the charges if the distance is tripled? 16 F 2 F 4 F 16 F 2 F 4 F F F F F 59 Two charges Q 1 and -Q 2 are separated by a distance r. The charges attract each other with a force F. What is the new force between the charges if the distance is cut to onefourth and the magnitude of each charge is doubled? 60 Sphere carries a positive charge 4Q and sphere is neutral. Initially the spheres are separated by a distance r. The spheres briefly touch each other and move to the initial separation. What is the new charge on each sphere? Q 4Q 16 F 64 F 48 F Q Q F F 2Q 61 Sphere carries a positive charge 4Q and sphere is neutral. Initially the spheres are separated by a distance r. The spheres briefly touch each other and move to the initial separation. Which of the following is the correct expression for the force on each sphere after they moved to the original distance, r? 62 positively charged sphere with a charge of +8Q is separated from a negatively charged sphere -2Q by a distance r. The spheres briefly touch each other and move to the original distance r. What is the new charge on each sphere after they move to distance r? Q 2Q 3Q Q Q 11

12 P Physics 2 Summer Work 63 positively charged sphere with a charge of +8Q is separated from a negatively charged sphere -2Q by a distance r. There is an attractive force F exerted on each sphere. The spheres briefly touch each other and move to the original distance r. What is the new force on each sphere in terms of F? lectric Potential and Potential nergy F F F F F 64 Which of the following represents the electric field map due to a single positive charge? 65 Which of the following represents the electric field map due to a single negative charge? 66 Which of the following represents the electric field map due to a combination of two positive charges? 67 Which of the following represents the electric field map due to a combination of two negative charges? 12

13 P Physics 2 Summer Work 68 Which of the following represents the electric field map due to a combination of one positive and one negative charge? 69 ompare the Gravitational Field and the lectric Field produced by a proton. The Gravitational Field is the same strength as the lectric Field. The lectric Field is stronger and is in the same direction as the Gravitational Field. The lectric Field is stronger and in the opposite direction of the Gravitational Field. The Gravitational Field is stronger and is in the same direction as the lectric Field. 70 Which of the following is a uniform electric field? 71 n electric field is created by two parallel plates. t which of the following points is the electric field the strongest? The electric field is the same at all points 72 n electric field is created by two parallel plates Which of the following points corresponds to the higher potential? The electric potential is the same at all points 73 uniform electric field is created by two parallel plates separated by a distance of 0.04 m. What is the magnitude of the electric field established between the plates? 20 V/m 200 V/m 2,000 V/m 20,000 V/m 0 V/m 13

14 P Physics 2 Summer Work 74 n electric field due to a positive charge is represented by the diagram. Which of the following points has higher potential? 75 n electric field due to a positive charge is represented by the diagram. t which of the following points is the electric field strongest in magnitude? 76 n electric field due to a positive charge is represented by the diagram. etween which of the following two points does the electric field do zero work on a moving charge? and and and and and 77 The electric potential at point is V. What is the electric potential at point in terms of V? 2 V 4 V V ½ V ¼ V 78 The magnitude of the electric field at point is. What is the electric field at point in terms of? non-uniform electric field is represented by the diagram. t which of the following points is the electric field greatest in magnitude? 14

15 P Physics 2 Summer Work 80 small conducting sphere is placed in a region of a non-uniform electric field. What is the direction of the electric force on the sphere applied by the field? 81 non-uniform electric field is represented by equipotential lines. What is the direction of the electric field at point? 82 non-uniform electric field is represented by equipotential lines. How much work is done by the electric field when a positive charge of magnitude 1 µ moves from point to point? 0 µj 20 µj 40 µj 60 µj 80 µj 83 non-uniform electric field is represented by equipotential lines. positive charge with a magnitude of 1 µ moves in the following path:. How much work is done by the electric field? 0 µj 20 µj 40 µj 60 µj 80 µj lectric urrent 84 The amount of charge flowing through a crosssectional area of a wire per unit of time is called: Voltage Power Resistance Work urrent 15

16 P Physics 2 Summer Work 85 What is the direction of the conventional current through the light bulb in the circuit presented by the diagram above? 86 wire of length L and cross-sectional area has a resistivity ρ. Which of the following formulas can be used to calculate the resistance of the wire? Out of the page 87 ll of the following wires are made of the same material but are different sizes. Identify the wire with the lowest resistance. 88 Two copper wires have the same cross-sectional area but have different lengths. Wire X has a length L and wire Y has a length 2L. The ratio between the resistance of wire Y and wire X is: 89 Two aluminum wires and are presented by the diagram. Wire has twice the radius of that of wire. How does the resistance of wire compare to the resistance of wire. 90 Which of the following graphs represents Ohm s law for a solid conductor at the constant temperature? 16

17 P Physics 2 Summer Work 91 The electric current as a function of voltage of a wire is presented by the graph. What is the resistance of the wire? 92 The electric current as a function of voltage of a wire is presented by the graph. What is the power dissipated in the resistor when the applied voltage is 5 V? 1Ω 0.8 Ω 1.6 Ω 0.4 Ω 0.2 Ω 5 W 10 W 15 W 20 W 25 W 93 group of physics students performs an experiment with electric circuits. Which of the following circuits can be used to measure the electric current and voltage? 94 When the switch in the circuit presented by the diagram above is open, the voltmeter reading is referred to as: Terminal voltage MF urrent Resistance Power 95 When the switch in the circuit presented by the diagram above is closed, the voltmeter reading is referred to: 96 n ammeter connected in series with three resistors reads an electric current of 2. What is the electric current flowing trough resistor R3? Terminal voltage 1 MF 2 urrent 3 Resistance 4 Power 5 17

18 P Physics 2 Summer Work 97 Three resistors: R1 = 3 Ω,R2 = 6 Ω, and R3 = 9 Ω are connected in series to each other and to a 36 V battery. What is the ammeter reading after the switch is closed? 98 Three resistors: R1 = 5 Ω,R2 = 3 Ω, and R3 = 4 Ω are connected in series to each other. voltmeter connected in parallel to resistor R2 measures voltage of 6 V. What is the current through the battery? Three resistors: R1 = 5 Ω,R2 = 3 Ω, and R3 = 4 Ω are connected in series to each other. voltmeter connected in parallel to resistor R2 measures voltage of 6 V. What is the net voltage in the circuit? 24 V 20 V 16 V 12 V 4 V 100 Two resistors R1 = 3 Ω and R2 = 6 Ω are connected in parallel. What is the net resistance in the circuit? 1 Ω 3 Ω 6 Ω 2 Ω 9 Ω 101 Two resistors R1 = 6 Ω and R2 = 12 Ω are connected in parallel to each other and in series to R3 = 2 Ω. What is the net resistance in the circuit? 1 Ω 3 Ω 6 Ω 2 Ω 9 Ω 102 Two resistors R1 = 6 Ω and R2 = 12 Ω are connected in parallel to each other and in series to R3 = 2 Ω. n ammeter measures an electric current of 3 flowing though resistor R3. What is the net voltage applied to the circuit? 6 V 12 V 18 V 24 V 36 V 18

19 P Physics 2 Summer Work 103 Two resistors R1 = 6 Ω and R2 = 12 Ω are connected in parallel to each other and in series to R3 = 2 Ω. n ammeter measures an electric current of 3 flowing though resistor R3. What is the current in 12 Ω resistor? Magnetism magnet bar is divided in two pieces. Which of the following statements is true? The magnet bar is demagnetized The magnetic field of each separated piece becomes stronger The magnetic poles are separated The two magnets are created The electric field is created 105 magnet bar is divided in two pieces. Which of the following statements is true about the force between the broken pieces if they face each other with a small separation? There is an electric repulsive force between the broken pieces There is an electric attractive force between the broken pieces There is a magnetic repulsive force between the broken pieces There is a magnetic attractive force between the broken pieces There is no force between the broken pieces since they are demagnetized 106 Which of the following magnetic fields is related to a magnetic field of a single magnet bar? 107 current produces: Magnetic field lectric field Gravitational field lectromagnetic field None from the above 19

20 P Physics 2 Summer Work 108 n electric current flows into the page. What is the direction of the magnetic field? 109 current-carrying wire is placed perpendicularly to the page. etermine the direction of the electric current from the direction of the magnetic field. To the bottom of the page To the top of the page lockwise ounter-clockwise To the right Into the page Out of the page lockwise ounter-clockwise To the left 110 vertical wire carries an electric current into the page. What is the direction of the magnetic field at point P located to the south from the wire? 111 vertical wire carries an electric current out of the page. What is the direction of the magnetic field at point P located to the west from the wire? West West North North ast ast South South own own 112 Which of the following diagrams represents the magnetic field due to a circular current? 113 straight long wire carries an electric current to the right. The current is placed in a uniform magnetic field directed into the page. What is the direction of the magnetic force on the current? Left Right To the bottom of the page To the top of the page Out of the page 20

21 P Physics 2 Summer Work 114 straight long wire carries an electric current to the top of the page. The current is placed in a uniform magnetic field directed out the page. What is the direction of the magnetic force on the current? 115 straight long wire carries an electric current out the page. The current is placed in a uniform magnetic field directed into the page. What is the direction of the magnetic force on the current? Left Right To the bottom of the page To the top of the page Out of the page Left Right To the bottom of the page To the top of the page There is no magnetic force on the current 116 positive charge moving with a constant velocity v enters a region of a uniform magnetic field pointing out the page. What is the direction of the magnetic force on the charge? 117 negative charge moving with a constant velocity v enters a region of a uniform magnetic field pointing out the page. What is the direction of the magnetic force on the charge? Left Right To the bottom of the page To the top of the page There is no magnetic force on the current Left Right To the bottom of the page To the top of the page There is no magnetic force on the current 118 negative charge moving with a constant velocity v enters a region of a uniform magnetic field pointing into the page. What is the direction of the magnetic force on the charge? 119 positive charge moving with a constant velocity v enters a region of a uniform magnetic field pointing into the page. What is the direction of the magnetic force on the charge? Left Left Right Right To the bottom of the page To the bottom of the page To the top of the page To the top of the page There is no magnetic force on the current There is no magnetic force on the current 21

22 P Physics 2 Summer Work 120 positive charge moving with a constant velocity v enters a region of a uniform magnetic field pointing to the top of the page. What is the direction of the magnetic force on the charge? 121 positive charge moves in parallel to a current carrying wire. What is the direction of the magnetic force on the charge? Left Right To the bottom of the page To the top of the page There is no magnetic force on the current Left Right To the bottom of the page To the top of the page There is no magnetic force on the current 122 negative charge moves away from a current carrying wire. What is the direction of the magnetic force on the charge? 123 vertical wire carries an electric current into the page. n electron approaches the current from east. What is the direction of the magnetic force on the electron? Left ast Right West To the bottom of the page North To the top of the page South There is no magnetic force on the current Into the page lectromagnetic Induction 124 loop of wire is placed in a perpendicular magnetic field. Suddenly, the magnitude of the magnetic field begins to increase, what is the direction of the induced current in the loop? lockwise. ounter-clockwise. Out of the page. Into the page. There is no induced current in the loop. 22

23 P Physics 2 Summer Work 125 loop of wire is placed in a perpendicular magnetic field. Suddenly, the magnitude of the magnetic field begins to increase, what is the direction of the induced current in the loop? 126 loop of wire is placed in a perpendicular magnetic field. Suddenly, the magnitude of the magnetic field begins to decrease, what is the direction of the induced current in the loop? lockwise. lockwise. ounter-clockwise. ounter-clockwise. Out of the page. Out of the page. Into the page. Into the page. There is no induced current in the loop. There is no induced current in the loop. 127 loop of wire is placed in a perpendicular magnetic field. Suddenly, the magnitude of the magnetic field begins to decrease, what is the direction of the induced current in the loop? 128 rectangular loop of wire with dimensions 0.2 m x 0.5 m is placed in a uniform magnetic field of magnitude 2 T. The magnetic field is perpendicular to the plane of the loop. What is the magnetic flux in the loop? lockwise. ounter-clockwise. Out of the page. Into the page. There is no induced current in the loop. 0.1 Wb 0.2 Wb 0.3 Wb 0.4 Wb 0.5 Wb 129 rectangular loop of wire with dimensions 0.2 m x 0.5 m is placed in a uniform magnetic field of magnitude 2 T. The magnetic field is perpendicular to the plane of the loop. The loop is moved from region I to region II in 0.05 s? What is the induced emf in the loop? 130 magnet bar is moved toward a vertical conducting ring that is suspended at the end of a string. What happens to the ring during the time when the magnet approaches it? 1 V 2 V 3 V 4 V 5 V The ring will move toward the magnet. The ring will move away from the magnet. The ring will remain stationary. The ring will tend to turn in clockwise direction. The ring will tend to turn in counter-clockwise direction. 23

24 P Physics 2 Summer Work 131 magnet bar with the north pole faced downward is held above a horizontal circular coil. Which of the following statements about the induced current is true(viewed from above)? 132 bar magnet with the north pole faced downward is dropped above a horizontal circular coil. Which of the following statements about the induced current is true (viewed from above)? The induced current flows in a clockwise direction. The induced current flows in a counter-clockwise direction. The induced current flows in a clockwise direction. The induced current flows in a counter-clockwise direction. The induced current flows first in a clockwise and then in a counter-clockwise direction. The induced current flows first in a clockwise and then in a counter-clockwise direction. The induced current flows first in a counterclockwise and then in a clockwise direction. The induced current flows first in a counterclockwise and then in a clockwise direction. There is no induced current in the coil. There is no induced current in the coil. 133 metal rod with a length of L moves at a constant velocity through a uniform magnetic field of magnitude. The magnetic field is perpendicular to the rod. Which of the following is true about the electric potential in the rod? 134 metal rod with a length of L moves at a constant velocity through a uniform magnetic field of magnitude. The magnetic field is perpendicular to the rod. What is the potential difference between point and? Point has higher potential. Point has higher potential. Point has higher potential. Point and have the same potential. Point and have the same potential. v vl L Lv Potential difference is zero. 135 metal rod with a length of L moves at a constant velocity through a uniform magnetic field of magnitude. The magnetic field is perpendicular to the rod. What is the induced electric field in the rod? 136 circular loop of wire is placed in a perpendicular uniform magnetic field. Which of the following will not produce an induced current in the loop? v vl L Lv There is no electric field in the rod. Move the loop to region II. Rotate the loop with respect to its diameter. Rotate the loop with respect to its center. Stretch the loop and change its area. None from the above. 24

25 P Physics 2 Summer Work 137 steady current, I, flows though a straight wire. circular loop of wire is placed next to the wire. Which of the following will not produce an induced current in the loop? 138 current-carrying wire lies on a horizontal table. circular coil is placed next to the loop. The current suddenly grows stronger. What is the direction of the induced current in the coil? Move the loop away from the wire. Move the loop toward the wire. Increase the electric current in the wire. ecrease the electric current in the wire. lockwise. ounter-clockwise. There is no induced current in the coil. The induced current changes its direction from clockwise to counter-clockwise. Move the loop in parallel to the wire. The induced current changes its direction from counter-clockwise to clockwise. 139 current-carrying wire lies on a horizontal table. circular coil is placed next to the loop. The current vanishes suddenly. What is the direction of the induced current in the coil? lockwise. ounter-clockwise. There is no induced current in the coil. The induced current changes its direction from clockwise to counter-clockwise. The induced current changes its direction from counter-clockwise to clockwise. 140 rectangular loop of wire is moved at a constant speed from region I to region II and then to region III. Which of the following is true about the magnetic force direction acting on the loop when it crosses the boundary between the regions? Region I to Region II Left Left Right Right Zero Region II to Region III Right Left Right Left Zero 141 oil is connected to a circuit including: a battery, a switch, and a resistor. oil lies in the same plane as coil. What is the direction of the induced current in coil at the moment when the switch is closed? Simple Harmonic Motion, Waves and Sound Waves lockwise. ounter-clockwise. There is no induced current in the coil. The induced current changes its direction from clockwise to counter-clockwise. The induced current changes its direction from counter-clockwise to clockwise. 25

26 P Physics 2 Summer Work 142 mass on a spring undergoes SHM. The maximum displacement from the equilibrium is called? 143 In a periodic process, the number of cycles per unit of time is called? Period Frequency mplitude Wavelength Speed Period Frequency mplitude Wavelength Speed 144 In a periodic process, the time required to complete one cycle is called? 145 mass undergoes SHM. When the mass reaches point x = + its instantaneous velocity is? Period Frequency mplitude Wavelength Speed Maximum and positive Maximum and negative Zero Less than maximum and positive Less than maximum and negative 146 mass undergoes SHM. When the mass reaches point x = 0 its instantaneous velocity is? 147 mass undergoes SHM. When the mass reaches point x = + its instantaneous acceleration is? Maximum and can be positive or negative onstant and doesn t depend on the location Zero Slightly less than maximum and positive Slightly less than maximum and negative Maximum and positive Maximum and negative Zero Slightly less than maximum and positive Slightly less than maximum and negative 26

27 P Physics 2 Summer Work 148 mass undergoes SHM. When the mass reaches point x = 0 its instantaneous acceleration is? 149 t which location of the mass the system has the maximum kinetic energy? Maximum and positive Maximum and negative Zero Slightly less than maximum and positive Slightly less than maximum and negative Only point Only point Only point 0 Point and The kinetic energy remains constant 150 t which location of the mass the system has the maximum elastic potential energy? 151 mass-spring oscillating system undergoes SHM with maximum amplitude. If the amplitude is doubled what effect will it produce on the mechanical energy of the system? Only point Only point Only point 0 Point and The potential energy remains constant The energy is increased by factor two The energy is increased by factor four The energy is decreased by factor two The energy is decreased by factor four It doesn t affect the energy 152 mass-spring oscillating system undergoes SHM with maximum amplitude. If the spring constant is doubled what effect will it produce on the mechanical energy of the system? 153 n object with a mass M is suspended from an elastic spring with a spring constant k. The object oscillates with maximum amplitude. If the amplitude of oscillations is doubled, how it will change the period of oscillations? The energy is increased by factor two The energy is increased by factor four The energy is decreased by factor two The energy is decreased by factor four It doesn t affect the energy The period is increased by factor two The period is increased by factor four The period is decreased by factor two The period is decreased by factor four The period remains the same 27

28 P Physics 2 Summer Work 154 n object with a mass M is suspended from an elastic spring with a spring constant k. The object oscillates with period T. If the mass of oscillations is quadrupled, how it will change the period of oscillations? 155 n object with a mass M is suspended from an elastic spring with a spring constant k. The object oscillates with period T on the surface of arth. If the oscillating system is moved to the surface of Moon, how it will change the period of oscillations? The period is increased by factor two The period is increased by factor four The period is decreased by factor two The period is decreased by factor four The period remains the same The period is increased by factor The period is increased by factor four The period is decreased by factor The period is decreased by factor four The period remains the same 156 mass M suspended from a string L undergoes SHM. Which of the following is true about the period of oscillations? 157 simple pendulum is moved from the arth to the Moon. How does it change the period of oscillations? The period increases with increasing amplitude The period increases with increasing mass The period increases with decreasing length The period increases with increasing length The period doesn t depend on acceleration due to gravity (cceleration due to gravity on moon= 1.6 m/s 2 ) The period is increased by factor The period is increased by factor four The period is decreased by factor The period is decreased by factor four The period remains the same 158 The length of a simple pendulum oscillating with a period T is quadrupled, what is the new period of oscillations in terms of T? 2 T 4 T T T T 159 simple pendulum has a period of 1 s. What is the length of the string? 1 m 2 m 4 m m m 28

29 P Physics 2 Summer Work 160 simple pendulum with a length of 1 m oscillates on the surface of a hypothetical planet X. What is the surface gravity on the planet if the period of oscillations is 4 s? 1.6 m/s m/s m/s m/s m/s mass-spring oscillating system undergoes SHM. Which of the following graphs represents the elastic potential energy as a function of position? 162 The distance traveled by a wave in one period is called? 163 Which of the following is the speed of a wave traveling with a wavelength λ, frequency f, and period T? Frequency Period Speed of wave Wavelength mplitude 164 The frequency of a wave is doubled when the wavelength remains the same. What happens to the speed of the wave? 165 The frequency of a wave increases when the speed remains the same. What happens to the distance between two consecutive crests? It doubles It increases It quadruples It decreases Remains unchanged Stays unchanged It is cut to one-half It increases first and then decreases It is cut to one-fourth It decreases first and then increases 29

30 P Physics 2 Summer Work 166 Which of the following statement is true about the transverse waves? 167 Which of the following statement is true about the longitudinal waves? They always have the same frequencies They always have the same frequencies They always have the same velocities They always have the same velocities They always have the same wavelengths They always have the same wavelengths They always travel through a dense medium They always travel through a dense medium The particles vibrate in perpendicular direction with respect to the wave motion The particles vibrate along the same direction as the wave motion 168 wave travels on a string of length L, linear density µ, and tension T. Which of the following is true? The wave speed is inversely proportional to the tension T The wave speed is directly proportional the linear density µ The wave speed increases with increasing tension T The wave speed increases with increasing linear density The wave speed only depends on the length of the string 169 wave pulse travels a long a thin part of a horizontal cord and reaches another part of the cord which is much thicker and heavier. Which of the following is true about the reflected and transmitted pulse by the boundary in the cord? Reflected pulse Upright Inverted Upright Inverted Zero amplitude Transmitted pulse Upright Inverted Inverted Upright Zero amplitude 170 wave pulse travels a long a thick part of a horizontal cord and reaches another part of the cord which is much thinner and lighter. Which of the following is true about the reflected and transmitted pulse by the boundary in the cord? 171 Two wave pulses with equal positive amplitudes travel on a cord approaching each other. What is the result of the oscillations when the pulses reach the same point? Reflected pulse Upright Inverted Upright Inverted Zero amplitude Transmitted pulse Upright Inverted Inverted Upright Zero amplitude It is constructive interference with twice the amplitude It is destructive interference with zero amplitude It is constructive interference with slightly greater amplitude It is constructive interference with the negative amplitude The standing wave is produced 30

31 P Physics 2 Summer Work 172 Two wave pulses one with a positive amplitude the other with equal negative amplitude travel on a cord approaching each other. What is the result of the oscillations when the pulses reach the same point? It is constructive interference with twice the amplitude It is destructive interference with zero amplitude It is constructive interference with slightly greater amplitude It is constructive interference with the negative amplitude The standing wave is produced 173 What is the amplitude of oscillations? 0.5 cm 1 cm 2 cm 5 cm 20 cm 174 What is the wavelength of the wave? 175 What is the amplitude of oscillations? 0.5 cm 1 cm 1 cm 2 cm 2 cm 4 cm 5 cm 6 cm 20 cm 8 cm 176 What is the wavelength of the wave? 177 stretched string of length L = 2 m resonates in two loops. What is the wavelength of the wave? 1 cm 2 cm 4 cm 6 cm 8 cm 1 m 2 m 3 m 4 m 6 m 31

32 P Physics 2 Summer Work 178 stretched string of length L = 6 m resonates in two loops. What is the wavelength of the wave? 179 stretched string of length 8 m vibrates at a frequency of 50 Hz producing a standing wave pattern with 4 loops. What is the speed of wave? 1 m 2 m 3 m 4 m 6 m 50 m/s 100 m/s 150 m/s 200 m/s 250 m/s 180 guitar string resonates at a frequency of 500 Hz forming a standing wave pattern with 5 loops. What is the fundamental frequency? 181 guitar string resonates at a fundamental frequency of 300 Hz. Which of the following frequencies can set the string into resonance? 100 Hz 30 Hz 200 Hz 100 Hz 300 Hz 400 Hz 400 Hz 500 Hz 500 Hz 600 Hz 182 Two sound sources S 1 and S 2 produce waves with frequencies 1000 Hz and 500 Hz. When we compare the speed of wave 1 to the speed of wave 2 the result is: 183 Which of the following is a true statement about the speed of sound in three different materials: air, water, and steel? Twice as greater One-half as greater The same Four times greater One-fourth as greater V air > V water > V steel V air > V water = V steel V air = V water < V steel V air < V water > V steel V air < V water < V steel 32

33 P Physics 2 Summer Work 184 sound source S radiates a sound wave in all directions. The relationship between the distances is S = = =. Which of the following points oscillates at the highest frequency? Point Point Point Point ll points have the same frequency 185 The loudness of a sound wave increases with increasing which of the following: Frequency mplitude Period Wavelength Speed of sound 186 sound wave travels from air into water. Which of the following doesn t change? 187 sound wave resonates in a tube with two open ends. What are the wavelengths of the three lowest resonating frequencies generated in the tube? Frequency mplitude Speed of Particles Wavelength Speed of sound L, 2L, 3L 2L, L, 2L/3 L/2, L/3, L/5 L/3, L/5, L/7 4L, 4L/3, 4L/5 188 The lowest frequency in an open tube is 250 Hz. What are the three following frequencies will resonate in the tube? 189 The lowest frequency in an open tube is 100 Hz. Which of the following frequencies will resonate in the tube? 500Hz, 750Hz, 1000Hz 25Hz 100Hz, 200Hz, 400Hz 50Hz 250Hz, 500Hz, 750Hz 150Hz 150Hz, 450Hz, 850Hz 200 Hz 50Hz, 100Hz, 150Hz 250Hz 33

34 P Physics 2 Summer Work 190 sound wave resonates in an open pipe with a length of 1 m. What is the wavelength of the wave? 191 sound wave resonates in an open pipe with a length of 2 m. What is the resonating frequency? (V sound = 340 m/s) 0.5 m 85 Hz 1.0 m 170 Hz 1.5 m 340 Hz 2.0 m 510 Hz 2.5 m 680 Hz 192 sound wave resonates in an open pipe with a length of 6 m. What is the wavelength of the wave? 193 sound wave resonates in an open pipe with a length of 1.5 m. What is the resonating frequency? (V sound = 340 m/s) 1.5 m 85 Hz 2.0 m 170 Hz 3.0 m 340 Hz 4.0 m 510 Hz 6.0 m 680 Hz 194 sound wave resonates in a tube with one open end. What are the wavelengths of the three lowest resonating frequencies generated in the tube? 195 The lowest frequency in a closed tube is 200 Hz. What are the three following frequencies will resonate in the tube? L, 2L, 3L L, 2L, 2L/3 L/2, L/3, L/5 L/3, L/5, L/7 4L, 4L/3, 4L/5 600Hz, 1000Hz, 1400Hz 100Hz, 200Hz, 400Hz 400Hz, 600Hz, 800Hz 900Hz, 1500Hz, 2100Hz 50Hz, 100Hz, 150Hz 34

35 P Physics 2 Summer Work 196 The lowest frequency in a closed tube is 300 Hz. Which of the following frequencies will resonate in the tube? 197 Two sound sources generate pure tones of 500 Hz and 525 Hz. What is the beat frequency? 900Hz 1000Hz 1200Hz 2500 Hz 3000Hz 5Hz 10Hz 15Hz 20Hz 25Hz 198 sound wave resonates in a closed pipe with a length of 3.0m. What is the wavelength of the wave? 199 sound wave resonates in a closed pipe with a length of 3.5 m. What is the wavelength of the wave? 1.5 m 1.5 m 2.0 m 2.0 m 3.0 m 2.5 m 4.0 m 3.0 m 6.0 m 6.0 m 200 sound wave resonates in a closed pipe with a length of 2.5 m. What is the resonating frequency? (V sound = 340 m/s) 201 Two sound sources produce waves with slightly different frequencies. What happens with the beat frequency if the frequency of the lowest tone increases and passed the higher tone? 85 Hz 170 Hz 340 Hz 510 Hz 680 Hz Increases ecreases Stays the same Increases and then decreases ecreases and then increases 35

36 P Physics 2 Summer Work lectromagnetic Waves 202 Sir Isaac Newton described light as: Tiny particles Waves Wave-particles Thermal waves Gravitational waves 203 The particle theory of light can explain the following phenomena: ispersion Reflection Refraction ll of the above None of the above 204 light beam changes its direction when it strikes a boundary between air and water. Which of the following is responsible for this phenomenon? iffraction Interference Reflection Refraction Polarization 205 When light crosses a boundary between air and water, the following quantity of light remains the same: Wavelength Speed Frequency None of the above ll of the above 206 beam of light has a wavelength of 600 nm in air. What is the frequency of the light (c=3x10 8 m/s)? 5x10 14 Hz 2x10 14 Hz 3x10 14 Hz 6x10 14 Hz 8x10 14 Hz 36

37 P Physics 2 Summer Work 207 light beam traveling in air with a wavelength of nm falls on a glass block. What is the wavelength of the light beam in glass (n glass = 1.500)? nm nm nm nm nm 208 light beam traveling in air with a wavelength of 650 nm falls on a glass block. What is the speed of the light beam in glass (c = 3.0x10 8 m/s, n glass = 1.5)? 3.0x10 8 m/s 2.0x10 8 m/s 1.5x10 8 m/s 1.0x10 8 m/s 0.50x10 8 m/s 209 light beam traveling in air with a wavelength of nm falls on a glass block. What is the frequency of the light beam in glass (c = 3x10 8 m/s, n glass = 1.5)? 5.0x10 14 Hz 2.5x10 14 Hz 3.0x10 14 Hz 6.0x10 14 Hz 210 Light travels fastest in: Glass iamond ir Vacuum Water 2.0x10 14 Hz 211 Sun rays fall on a glass prism. Which of the following rays will be refracted the least? lue Violet Green Yellow Red 212 Which of the following theories can explain the bending of light behind obstacles forming a bright spot inside the shadow? Particle theory of light Wave theory of light Kinetic theory Special theory of relativity lassical mechanics 37

38 P Physics 2 Summer Work 213 The wave theory of light is associated with: Isaac Newton lbert instein Max Planck hristiaan Huygens Robert Millikan 214 In Young s double-slit experiment, a series of bright and dark lines was observed. Which of the following principles is responsible for this phenomenon? Polarization Reflection ispersion Interference Refraction 215 blue beam of light falls on two narrow slits producing an interference pattern on a screen. If instead of blue light, a red beam of light was used in the same experiment, which changes to the interference pattern can be observed? Interference fringes move closer to the central maximum. Interference fringes move further away from the central maximum. No change in interference. right fringes are replaced with dark fringes. 216 In a Young s double-slit experiment, an interference pattern is observed on a screen. The apparatus is then submerged into water. What is the change in the interference pattern? No change in interference. The number of fringes increases. The fringes move closer to the central maximum. The fringes move further away from the central maximum. right fringes are replaced with dark fringes. The number of fringes increases. 217 Two coherent light waves approaching a certain point on a screen produce a constructive interference pattern. The optical extra distance traveled by one of the waves is: λ/2 λ/3 3λ/2 λ 5λ/2 218 In a Young s double-slit experiment the distance between the slits increases. What happens to the separation between the fringes? Increases. ecreases. Stays the same. Increases for the bright fringes and decreases for the dark fringes. Increases for the dark fringes and decreases for the bright fringes. 38

39 P Physics 2 Summer Work 219 In a double-slit experiment, the distance between the slits is doubled. What happens to the separation between the two adjacent maxima? oubles. Quadruples. Is cut in half. Is cut to a quarter. 220 diffraction grating can be used to: nalyze the intensity of a light beam. Identify an element by its optical spectra. Identify an element by its intensity. etermine the speed of light. ll of the above. Stays the same. 221 light beam spreads out when it travels through a narrow slit. Which of the following can explain this phenomenon? Polarization Reflection ispersion iffraction Refraction 222 In a single-slit experiment, as a result of the interference of a laser beam, a student observes a set of red and dark concentric circles. When he increases the width of the slit, what happens to the interference pattern? The separation between the circles increases. The separation between the circles decreases. No change in interference pattern. The separation between the circles increases and then decreases. The separation between the circles decreases and then increases. 223 olors in a soap bubble or in an oil slick on the road are caused by: iffraction Polarization Thin Film Interference Light intensity change 224 Maxwell s quations describe the integration of which two fundamental forces? lectricity and Magnetism lectricity and the Weak Nuclear force Magnetism and the Weak Nuclear force Magnetism and Gravity lectricity and the Strong Nuclear force 39

40 P Physics 2 Summer Work 225 llowing only the lectric Field component vibrating in one, specific plane of an electromagnetic wave through a special filter is called: iffraction Polarization Interference Refraction Reflection 226 Which of the following is the correct order of electromagnetic radiation with increasing frequency? Radio Waves, Visible Light, IR Radiation, UV Radiation, X-Rays, γ Rays γ Rays, Visible Light, IR Radiation, UV Radiation, X-Rays, Radio Waves Radio Waves, UV Radiation, Visible Light, IR Radiation, X-Rays, γ Rays Radio Waves, Visible Light, X-Rays, IR Radiation, UV Radiation, γ Rays Radio Waves, IR Radiation, Visible Light, UV Radiation, X-Rays, γ Rays Quantum Physics 227 rooke s Tube (a tube containing rarefied gas through which a current is passed between a cathode and an anode) was used in the discovery of the electron by: R.. Millikan J. J. Thomson J. S. Townsend M. Planck. H. ompton 228 The electron charge was measured for the first time in the athode ray experiment. Photoelectric effect experiment. Oil drop experiment. lectron diffraction from aluminum foil. ompton ffect experiment. 229 The charge on an electron is represented by e. Which of the following charges can exist? 2.0 e 2.5 e 3.6 e 5.2 e 5.5 e 40

41 P Physics 2 Summer Work 230 X-rays are created when: protons strike a metal target. neutrons strike a metal target. photons are incident on a surface. electrons strike a metal target. photons strike electrons. 231 The spontaneous decay of nuclei is called: bsorption Ultraviolet xplosion Permittivity Photoelectric ffect Radiation 232 Which of the following are emitted by the nucleus during radioactive decay? lpha particles eta particles Gamma rays ll of the above None of the above 233 Which of the following colors is associated with the lowest temperature of a black body radiator? Violet lue Green Yellow Red 234 lassical physics could not explain the behavior of a black body radiator at very short wavelengths. What was this problem called? bsorption failure Ultraviolet xplosion Wavelength decrease Photoelectric ffect Radiation 235 What did Max Planck propose to solve the black body radiator problem? Radiation is made up of waves. Light changes its speed in different media. Light comes in packets of energy. Light has a continuous energy profile. Objects do not radiate energy. 41

42 P Physics 2 Summer Work 236 Which of the following photons has the greatest energy? Infrared lue light X-ray Gamma ray Ultraviolet 237 The energy of a photon depends on its: mplitude Speed Temperature Pressure Frequency 238 How does the energy of a photon change if the wavelength is doubled? oubles Quadruples Stays the same Is cut to one-half Is cut to one-fourth 239 How does the momentum of a photon change if the wavelength is doubled? oubles Quadruples Stays the same Is cut to one-half Is cut to one-fourth 240 The photoelectric effect was explained by lbert instein by assuming that: light is a wave. light is a particle. an electron behaves as a wave. an electron behaves as a particle. light does not interact with matter. 241 The kinetic energy of photoelectrons depends on the: speed of light. angle of illumination. intensity of the light. number of incident photons. photon frequency. 42

43 P Physics 2 Summer Work 242 The maximum kinetic energy of photoelectrons depends on which of the following? I. The light intensity II. The frequency of the light III. The material of the photoelectric cell Only I Only II Only III 243 Rutherford s Gold Foil experiment caused a modification of which of the following? Plum-pudding model of the atom Planetary model of the atom de roglie hypothesis Wave nature of light Quantum theory of light Only I and II Only II and III 244 In Rutherford s Gold Foil experiment, most of the alpha particles passed through the foil undeflected. Which of the following properties of the atom can be explained from this observation? The atom's negative charge is concentrated in the nucleus. The nucleus has electrons and protons. The atomic mass is distributed evenly throughout the atom. The alpha particles can't be deflected by electrons. The size of the nucleus is much less than the size of the atom. 245 Which of the following statement(s) can be associated with ohr s theory of the atom? I. n electron orbiting the nucleus can change its energy continuously. II. n electron orbiting the nucleus emits energy and falls into the nucleus. III. n electron orbits the nucleus without radiating energy and can change its energy only by a specific, quantized amount, when it moves between the orbits. IV. lectrons can only orbit the nucleus in specific circular orbits with fixed angular momentum and energy. I and II II and IV II and III III and IV I, II, III and IV 246 When an electron falls from an orbit where n = 2 to n = 1: photon is emitted. photon is absorbed. No change in atomic energy. The atomic energy decreases to zero. The atomic energy increases. 247 When an electron jumps from an orbit where n = 1 to n = 4, its energy in terms of the energy of the ground level ( 1 ) is: 1 /9 1 /

44 P Physics 2 Summer Work 248 Which of the following is a limitation of the ohr Model of the atom? It does not explain atomic spectra. It successfully predicts the intensity of the photons emitted when electrons change energy levels. The model only applies to Hydrogen like atoms. The model only applies to light atoms. 249 The ompton ffect supports which of the following theories? Special Theory of Relativity. Light is a wave. Thomson model of the atom. Light is a particle. The oulomb force. 250 Neutrons have a: positive charge and a mass approximately equal to a proton. positive charge and a mass approximately equal to an electron. neutral charge and a mass approximately equal to a proton. neutral charge and a mass approximately equal to an electron. 251 Which of the following formulas can be used to determine the de roglie wavelength? λ = hmv λ = h/mv λ = mv/h λ = hm/c λ = mc/h negative charge and a mass approximately equal to a proton. 252 Which one of the following objects, moving at the same speed, has the greatest de roglie wavelength? Neutron lectron Tennis ball owling ball lpha particle 253 Heisenberg s Uncertainty Principle states: The more precise a particle s energy can be measured, the less precise its position can be measured. particle s position can be measured exactly. particle s energy can be measured exactly. The more precise a particle s momentum can be measured, the less precise its position can be measured. The more precise a particle s momentum can be measured, the less precise its energy can be measured. 44

45 P Physics 2 Summer Work 254 Knowledge of the wave function of a particle enables the probabilities of the particle s position, momentum, energy and other characteristics to be calculated. In classical physics, what is the analogue of the wave function? The particle's momentum. The particle's energy. The particle's mass. The particle's size. The sum of the forces on the particle. 255 Which theory explains the interaction of photons with matter (electrons)? Quantum hromodynamics. The Standard Model. String Theory. The Grand Unified Theory. Quantum lectrodynamics. 256 Which theory explains the attraction between protons and neutrons? Quantum hromodynamics. The Standard Model. String Theory. The Grand Unified Theory. Quantum lectrodynamics. 257 Which theory integrates the explanation of the strong nuclear force, the weak nuclear force and electromagnetism? Quantum hromodynamics. The Standard Model. String Theory. The Grand Unified Theory. Quantum lectrodynamics. 258 How much of the universe is comprised of matter and energy that is explained by current Physics theory? Nuclear Physics 95% 75% 50% 25% 5% 45

46 P Physics 2 Summer Work 259 n unknown chemical element is presented by the following formula:. What is the name of index Z? 260 n unknown chemical element is presented by the following formula:. What is the name of index? tomic Mass Number tomic Number Principle quantum number Orbital quantum number Magnetic quantum number tomic Mass Number tomic Number Principle quantum number Orbital quantum number Magnetic quantum number 261 The atomic number is equivalent to which of the following? 262 The atomic mass number is equivalent to which of the following? The number of neutrons in the atom. The number of protons in the atom. The number of nucleons in the atom. The number of α particles in the atom. None of the above The number of neutrons in the atom. The number of protons in the atom. The number of nucleons in the atom. The number of α particles in the atom. None of the above 263 Which of the following particles has the smallest mass? 264 Which of the following statements about the mass of an atom is true? Proton lectron Neutron Nucleus Nucleon It is evenly divided between the protons and the orbiting electrons. It is evenly divided between the nucleons and the orbiting electrons. It is concentrated in the electron cloud. It is concentrated in the nucleus. It is evenly divided between protons, neutrons and orbiting electrons. 46

47 P Physics 2 Summer Work 265 Which of the following is correct for the number of neutrons in the nucleus? 266 How many electrons are in the atom? N = Z N = Z N = Z + N = Z N = How many nucleons are in the atom? 268 How many neutrons are in the atom? How many protons are in the atom? 270 What law did rnest Rutherford use to estimate the size of the nucleus? onservation of nucleon number onservation of angular momentum onservation of linear momentum onservation of energy onservation of charge 47

48 P Physics 2 Summer Work 271 Why are nuclear energy levels more complex than electron energy levels? 272 Which of the following about the nuclear force is true? Nuclear energy levels depend only on attractive forces. Nuclear energy levels depend on attractive and repulsive forces. Nuclear energy levels are an order of one hundred times as great as electron energy levels. lectron energy levels depend on the interaction between neutrons and electrons. lectron energy levels have greater energy than the nuclear energy levels. It is an attractive force between electrons and protons in an atom. It is an attractive force between electrons and neutrons in an atom. It is much weaker than the electromagnetic force. It is much weaker than the gravitational force. It is a strong, short- range, attractive force between the nucleons. 273 What force is responsible for the radioactive decay of the nucleus? 274 Isotopes of an element: Gravitational force Weak Nuclear force Strong Nuclear force lectromagnetic force It's just called TH Force. have the same number of protons and electrons, but a different number of neutrons. have the same number of protons and neutrons, but a different number of electrons. have different number of protons. have different number of electrons. have the same number of neutrons and protons. 275 inding energy is: the amount of energy required to break a nucleus apart into protons and neutrons. the amount of energy required to break a nucleus apart into protons and electrons. the amount of energy required to break a nucleus apart into electrons and neutrons. the amount of energy released when neutrons change energy levels. the amount of energy released when protons change energy levels. 276 If mh is the atomic mass of Hydrogen, mn is the mass of a neutron, and M is the atomic mass of the atom, which of the following is the mass defect formula? Δm = Z mh + N mn M Δm = Z mh + N mn + M Δm = Z mh N mn M Δm = Z mh N mn + M Δm = M Z mh N mn 48

49 P Physics 2 Summer Work 277 When nucleons form a stable nucleus, binding energy is: 278 When a nucleus is divided into its constituents, energy is: created from nothing. destroyed into nothing. transformed into visible light. absorbed as high energy photons or particles. released as high energy photons or particles. created from nothing. destroyed into nothing. transformed into visible light. absorbed by the nucleus which then breaks it apart. released by the nucleus as it breaks apart. 279 n isotope with a high inding nergy per nucleon: 280 Why do heavier nuclei have a greater ratio of neutrons to protons than lighter nuclei? will decay in a short period of time. is very unstable. is very stable. has very few electrons. has more protons than neutrons. to add more nucleons so that the binding energy is greater. to provide a greater weak nuclear force. to provide more attractive electromagnetic force. to provide more attractive strong nuclear force to balance the repulsive electromagnetic force. to provide more repulsive strong nuclear force to balance the attractive electromagnetic force. 281 Which of the following is the alpha particle? 282 Which of the following is the particle? 49

50 P Physics 2 Summer Work 283 Which of the following is the particle? 284 Which of the following about the gamma ray is true? It carries a positive charge. It carries a negative charge. It can be deflected by a magnetic field. It can be deflected by an electric field. It has zero rest mass and a neutral charge. 285 Which type of radiation is stopped by a sheet of paper? 286 What is the missing element from the following equation? alpha particle beta particle Gamma ray X- ray Ultraviolet radiation 287 What is the missing element from the following equation? g sample of a radioactive element has a half- life of 5 days. How many grams of radioactive material will remain after 15 days? 100 g 50 g 25 g 12.5 g 0 g 50

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