Solution Homework PHY Midterm
|
|
- Dylan Weaver
- 5 years ago
- Views:
Transcription
1 Solution Homework PHY3--53 Midterm. Three eual charges, each of +4.6 µc, are spaced along a straight line. Charge A, is at one end of the line of.8 m from the central charge, B. Charge C is the other side of charge B a distance of. m from charge B. What is the magnitude and direction of the total force on each charge? Solution: At point A k B A BA rba ( (4.6 (.8 ( r 5.88 ( iˆ BA k C A CA rca ( (4.6 (4 (4.6. r. ( iˆ CA v v r CA ( 5.88 iˆ + (. iˆ 7.7 iˆ A BA + ASWER At point B: k A B AB rab ( (4.6 (.8 ( r 5.88 BA iˆ PHY3
2 Solution Homework PHY3--53 Midterm k C B CB rcb ( (4.6 (. ( r 3.3 ( iˆ CB v v r CB (5.88 iˆ ( 3.3 iˆ.5 iˆ B AB + + ASWER At point C: k A C AC rac ( (4.6 (4 (4.6. r. BA k iˆ ( (4.6 B C BC rbc (. ( r 3.3 v BC B AB + iˆ v r CB (. iˆ (3.3 iˆ 5. + ASWER PHY3
3 Solution Homework PHY3--53 Midterm. In the Bohr theor of the hdrogen atom, an electron moves in a circular orbit about a proton, where the radius of the orbit is.5 - m. (a. ind the electric force eerted on each particle. Solution: given (proton.6 C, (electron.6 C k r ( (.6 (.5 ( (b If this force causes the centripetal acceleration of the electron, what is the speed of the electron? Solution: ( from mv r C m electron. -3 kg 8. mv C r (. ( v m 8 (8. (.5 v 3.. m / s 6 PHY3
4 Solution Homework PHY3--53 Midterm 3. ind the force eerted on point charge a b the other two point charges depicted in the diagram: Solution: At point A ca sin3 o ca ca cos3 o 3 ba kba ( (4(3 ba.73 o rba (.5sin 3 r ba.73 ( ˆj k ( (5(3 5.4 c a ca rca (.5 r ca ca o cos3 ( iˆ + ca sin ( ˆ i ( ˆj iˆ ˆj v v r a ba + ca (.73 ˆ j + ˆ ( 4.67 i +.7 ˆj iˆ ˆj Magnitude Direction ˆj a ( ( ASWER.46 o θ tan ( PHY3
5 Solution Homework PHY3--53 Midterm Solution: At point B ab cb k ( a b ab o rab (.5sin 3 r.73 ab k ˆj ( c b cb o rcb (.5cos3 (3(4.73 (5(4.6 r cb.6 iˆ v v r b ab + cb.73 ˆ j +.6 iˆ.6 iˆ +.73 ˆj Magnitude Direction b (.6 + (.73.8 ASWER.73 o θ tan ( Solution: At point C ac cos3 o bc ac sin3 o ac k b c bc rbc ( (4(5 (.5cos3 o.6 PHY3
6 Solution Homework PHY3--53 Midterm r bc.6 ( iˆ k ( a c ac rac (.5 ac (3(5 5.4 r o cos3 (ˆ i + sin 3 ( ˆj ac ( ˆ i 5.4 ( ˆj iˆ ˆj v v r c bc + ac (.6 ˆ i 4.67 iˆ.7 iˆ ˆj ac +( j ASWER ˆ PHY3
7 Solution Homework PHY3--53 Midterm 4. Consider a thin spherical shell of radius 4. cm with a total charge of 3. µc distributed uniforml on its surface. ind the electric field. (a.. cm from the center of the charge. (b.. cm from the center of the charge. (a. cm Solution net in + + Guass s law + r + E v. da v + + (4 r net ε E π + + E (b. cm + net 3 C + + Guass s law + r + E v. da v + + E(4π r E E 3. E 4(3.4(. (8.85 net ε ε 4πr ε 7. / C 6 PHY3
8 Solution Homework PHY3--53 Midterm 5. A long straight metal rod has a radius of 5. cm and a charge per unit length of 3 nc/m. ind the electric field (a. 3. cm (b.. cm and (c.. cm from the ais of the rod, where distances are measured perpendicular to the rod. (a. 3. cm Solution : E v. da v E, net ε (b.. cm Solution : EdA cos E v. da v + EdA cos + EdA 3 cos EA A πrl is area the a side of clinder. net ε λl ε λl ε E λ πrε E λ πrε 3 C (3.4(.( / C 3 (c. cm Solution : E λ πrε 3 C (3.4(.( / C PHY3
9 Solution Homework PHY3--53 Midterm 6. A proton accelerates from rest in a uniform electric field of 64/C. At one later moment, its speed is. Mm/s (a. find the acceleration of the proton. Solution a E m (64 / C(.6 (.67 7 kg C 6.3 m / s (b. over what time interval does the proton reach this speed? 6 Solution given: v. m / s, u, a 6.3 m / s v u + at 6. + (6.3 t 5 t.6 s (c. how far does it move in this time interval? 5 Solution given: u, a 6.3 m / s, t.6 s s ut + at 5 (6.3 (.6.77 m (d. What is its kinetic energ at the end of this interval? Solution given: v. m / s , m oton kg Pr E k mv (.67 (.. J PHY3
10 Solution Homework PHY3--53 Midterm 7. A proton moves at m/s in the horizontal direction. It enters a uniform vertical electric field with a magnitude of.6 5 /C. Ignoring an gravitational effects, find (a. the time interval reuired for the proton to travel 5. cm horizontall. 5 Solution given: u 4.5 m / s, s 5. m s t u t s u m 7. s ns s 5 (b. its vertical displacement during the time interval in which its travels 5. cm horizontall. u, a E 5 (.6 (.6 7 m (.67 kg 7 t. s s u t + a t ( 3 7. m / s (. s.57 Solution given: C. 3 m / s, m (c. the horizontal and vertical component of its velocit after it has traveled 5. cm horizontall. Solution given: v 5 u 4.5 m / s v u + a t (. m / s The resultant of velocit v 4.5 iˆ 7 (. s 5 +. / s. / 5 m s 5 ˆj m PHY3
11 Solution Homework PHY3--53 Midterm 8. Two parallel plates having charges of eual magnitude but opposite sign are separated b. cm. Each plate has a surface charge densit of 36. nc/m. A proton is released from rest at the positive plate. Determine (a. the potential difference between the plates. Solution V Ed But σ 36 E 8.85 ε / C V (467.8( V (b. the kinetic energ of the proton when it reaches the negative plate. 7 Solution : m proton.67 kg, proton.6 C.6 V rom problem (a E E Ek + V Ek + V V Ek ( V + ( V Ek -.6 ( V V Ek V ( V V V.6 (488.4 Ek 7 Ek 7.8 J (c. the speed of the proton just before it strikes the negative plate. Solution Ek mv J (.67 kg v v 3.6 m / s 5 (d. the acceleration of the proton. Solution v u + as ( ( + a(. a 3.8 m / s PHY3
12 Solution Homework PHY3--53 Midterm (e. the force on proton. Solution ma 7 6 (.67 kg(3.8 m / s 6.5 (f. rom the force, find the magnitude of the electric field and show that it is eual to the electric field found from the charge densities on the plate. Solution E E / C (.6 C The electric field in (f is the same as the electric field in (a. PHY3
13 Solution Homework PHY3--53 Midterm. Three charges, 4-6 C, - -6 C, and C are placed at the corners of an isosceles triangle with sides.3 m. What is the potential energ of the sstem? Solution k E P r k + r 3 3 k 3 + r ( (4 C( C ( +.3m ( (5 C(4 C +.44m J 3 ( C(5.3m C PHY3
14 Solution Homework PHY3--53 Midterm. A charged droplet of mass kg is hovering motionless between two parallel plates. The parallel plates create have a potential difference of 4 V and are. mm apart. What is the charge on the particle? B how man electrons is the particle deficient? E mg What is the charge on the particle Solution rom V 4V 7 E. / C 3 d. m E mg mg (5.88 kg(.8m / s 7 E. / C C 3 e.6 C / electrons elcetrons C (positive charge PHY3
15 Solution Homework PHY3--53 Midterm. A particle with a charge of -.5 uc and a mass of.5-6 kg is released from rest at point X and accelerates toward point Y, arriving there with a speed of 4 m/s. a. What is the potential difference V Y - V X between X and Y? b. Which point is at a higher potential? Solution a. What is the potential difference V Y - V X between X and Y? mv + 6 E E V mv + V 6 (.5 ( + (.5 V (.5 (4 + (.5 V.5 V V 3.5 V -V.5 47 V b. Which point is at a higher potential? V > V PHY3
16 Solution Homework PHY3--53 Midterm. A light bulb filament is made of tungsten which has a coefficient of resistivit (α of.45(c -. At room temperature of C the filament has a resistance of Ω. (a What is the average power of the light bulb immediatel after it has been plugged into a V ac outlet? V ( P 44 R W (b After a ver brief time, the light bulb filament has changed temperature and is glowing brightl, the "rms" current is measured to be.833 amp. What is the resistance of the light bulb now? V R I.833 Ω (c What is the average power of the light bulb when it is glowing brightl as in part (b? V ( P. 6 R 44.6 W (d What is the temperature of the filament when it is glowing brightl? R R ( + α T 44 ( +.45( T T T o C PHY3
17 Solution Homework PHY3--53 Midterm 3. A current of 5 amps is maintained through a batter for 3 seconds. In this time 6 J of chemical energ is transformed into electrical energ. (a What is the emf of the batter? (b What electrical power was supplied to the circuit eternal to the batter? (a. W P Iε t 6 3 s J (5ε ε 4 V (b. W 6 J P t 3s W 4. What is the potential difference between Points A and B? ind the current go through each of resistors. R AB ( 36 Ω (3 + 6 R 4 + 6Ω ε I A R 6 V IR AB AB ( 4 V V up I ( I ( + I. 33A I (5 + I. 66A 6 PHY3
18 Solution Homework PHY3--53 Midterm 5. ind the currents that go through each of resistor and loss power on 5 Ω. If s and s is switch when (a. if turn off s and s (b. if turn off s and turn on s (c. if turn off s and turn on s 4 V Ω a 5 Ω S b I V, Ω - + c S I Ω (a. if turn off s and s (วงจรเป ด กระแสไม ไหล ด งน น I I (b. if turn off s and turn on s (กระแสไม ไหลในสายกลาง ε I( 4 + I ε 4. 33A (c. if turn off s and turn on s (กระแสไม ไหลในสายล าง ε + ε I ( I. 4A PHY3
19 Solution Homework PHY3--53 Midterm 6. ε V, ε V, R R Ω and three (, (, (3 4.-W,.-V light bulbs are connected in the circuit as shown in figure. ind which bulb is the most brightness. R ( R ( (3 ε ε R bulbs V ( 5Ω P 4 R R 3 R ε I ε R4 I R 5 I z จะได ε IR Loop ; I ( + ( I I 5 45I 5I ( Loop ; I (5 + ( I I 5 + ( I I 5 z 5I + 75I 5I ( Loop 3; I ( + ( I I 5 I z z z z 5I + 45 (3 I.8A, I.4A, I z. A หลอดท : P I (5 (.4 (5. 44 W หลอดท : P ( I I 5 (.8.4 (5. 64 W หลอดท 3 : P3 ( I I z 5 (.4 (. (5. 36 W หลอดท สว างท ส ด, หลอดท สว างน อยท ส ด PHY3
20 Solution Homework PHY3--53 Midterm 7. orm this figure, Calculate the magnetic field at point P which is the center of a circular loop. R P I I R ว ธ ท า R P I I R ค ดท ลวดต วน ายาวมาก จากกฎของแอมแปร B v. dl v µ I net B dl cos µ I (Q B ก บ dl ม ท ศทางเด ยวก น B (π (R µ I B µ I ท ศพ งออกจากจ ด P 4πR ค ดท ลวดวงกลม จากกฏของบ โอต ซาวาร ต โดยท dl v ก บ rˆ ท าม ม ต อก น แทนค า µ I dl sin φ B 4π r µ I dl sin 4π r B PHY3
21 Solution Homework PHY3--53 Midterm µ I (πr 4πR I R µ ท ศพ งออกจากจ ด P สนามแม เหล กล พธ ท จ ด P B B + B µ I + 4πR I R µ ท ศพ งออกจากจ ด P ตอบ PHY3
22 Solution Homework PHY3--53 Midterm 8. The straight rod carries a current of 4 A, where there is a horizontal magnetic field with magnitude -3 T. If the length of rod is 5 cm, find the magnitude of magnetic force eerts on this rod. B IlBsinθ (4A(.5( 3 sin 3 3 o 4. In which direction, if an, will the metal rod be deflected? B. A magnetic field has a magnitude of.78t and is uniform over a circular surface that has radius of. m. The field is oriented at an angle of of ø 5 o with respect to the normal to the surface. What is the flu through the surface? φ B BAcosθ (.78T ( π (. cos 5 o. 4 Weber PHY3
Exam 2 Solutions. Applying the junction rule: i 1 Applying the loop rule to the left loop (LL), right loop (RL), and the full loop (FL) gives:
PHY61 Eam Solutions 1. [8 points] In the circuit shown, the resistance R 1 = 1Ω. The batter voltages are identical: ε1 = ε = ε3 = 1 V. What is the current (in amps) flowing through the middle branch from
More informationPHYS 2326 University Physics II Class number
PHYS 2326 University Physics II Class number HOMEWORK- SET #1 CHAPTERS: 27,28,29 (DUE JULY 22, 2013) Ch. 27.======================================================= 1. A rod of 2.0-m length and a square
More informationA) 4 B) 3 C) 2 D) 5 E) 6
Coordinator: Saleem Rao Monday, January 01, 2018 Page: 1 Q1. A standing wave having three nodes is set up in a string fixed at both ends. If the frequency of the wave is doubled, how many antinodes will
More information= C. on q 1 to the left. Using Coulomb s law, on q 2 to the right, and the charge q 2 exerts a force F 2 on 1 ( )
Phsics Solutions to Chapter 5 5.. Model: Use the charge model. Solve: (a) In the process of charging b rubbing, electrons are removed from one material and transferred to the other because the are relativel
More informationCh 17 Problem Set 31. A toaster is rated at 600 W when connected to a 120-V source. What current does the toaster carry, and what is its resistance?
Ch 17 Problem Set 31. A toaster is rated at 600 W when connected to a 120-V source. What current does the toaster carry, and what is its resistance? 33. How many 100-W lightbulbs can you use in a 120-V
More informationWhich of the following is the SI unit of gravitational field strength?
T5-2 [122 marks] 1. A cell is connected in series with a 2.0Ω resistor and a switch. The voltmeter is connected across the cell and reads 12V when the switch is open and 8.0V when the switch is closed.
More informationPhys 0175 Midterm Exam III Solutions Apr 3, 2008
Phys 0175 Midterm Exam III Solutions Apr 3, 2008 1. (8 pts) A particular capacitor has a separation between its plates of 0.03 mm. The area of one plate is 16 m 2. The capacitor is initially uncharged.
More information4 pt. (in J) 3.A
Mark Reeves - Physics 22, Fall 2011 1 A point charge of mass 0.0699 kg and charge q = +6.87 µc is suspended by a thread between the vertical parallel plates of a parallel-plate capacitor, as shown in the
More informationProblems set # 2 Physics 169 February 11, 2015
Prof. Anchordoqui Problems set # 2 Phsics 169 Februar 11, 2015 1. Figure 1 shows the electric field lines for two point charges separated b a small distance. (i) Determine the ratio q 1 /q 2. (ii) What
More informationPhys102 Final-163 Zero Version Coordinator: Saleem Rao Tuesday, August 22, 2017 Page: 1. = m/s
Coordinator: Saleem Rao Tuesday, August 22, 2017 Page: 1 Q1. A 125 cm long string has a mass of 2.00 g and a tension of 7.00 N. Find the lowest resonant frequency of the string. A) 2.5 Hz B) 53.0 Hz C)
More information(a) What is the magnitude of the electric force between the proton and the electron?
.3 Solved Problems.3. Hydrogen Atom In the classical model of the hydrogen atom, the electron revolves around the proton with a radius of r = 053. 0 0 m. The magnitude of the charge of the electron and
More informationPhysics 420 Fall 2004 Quiz 1 Wednesday This quiz is worth 6 points. Be sure to show your work and label your final answers.
Quiz 1 Wednesday This quiz is worth 6 points. Be sure to show your work and label your final answers. 1. A charge q 1 = +5.0 nc is located on the y-axis, 15 µm above the origin, while another charge q
More informationPhys 0175 Midterm Exam II Solutions Feb 25, m e te rs
Phys 075 Midterm Eam II Solutions Feb 25, 2009. (6 pts) Locations F and G are just outside two uniformly charged large metal plates, which are 3 cm apart. Measured along the path indicated by the dotted
More informationElectric_Field_core_P1
Electric_Field_core_P1 1. [1 mark] An electron enters the region between two charged parallel plates initially moving parallel to the plates. The electromagnetic force acting on the electron A. causes
More information10. The dimensional formula for c) 6% d) 7%
UNIT. One of the combinations from the fundamental phsical constants is hc G. The unit of this epression is a) kg b) m 3 c) s - d) m. If the error in the measurement of radius is %, then the error in the
More informationMagnetism Practice Problems PSI AP Physics B
Magnetism Practice Problems PSI AP Physics B Name 1. A straight wire carries a current down. What is the direction of the magnetic field at the point to the East from the wire? (A) West (B) East (C) North
More informationPHY 131 Review Session Fall 2015 PART 1:
PHY 131 Review Session Fall 2015 PART 1: 1. Consider the electric field from a point charge. As you move farther away from the point charge, the electric field decreases at a rate of 1/r 2 with r being
More information21 MAGNETIC FORCES AND MAGNETIC FIELDS
CHAPTER 1 MAGNETIC FORCES AND MAGNETIC FIELDS ANSWERS TO FOCUS ON CONCEPTS QUESTIONS 1 (d) Right-Hand Rule No 1 gives the direction of the magnetic force as x for both drawings A and B In drawing C, the
More informationSolve: From Example 33.5, the on-axis magnetic field of a current loop is
33.10. Solve: From Example 33.5, the on-axis magnetic field of a current loop is B loop ( z) μ0 = We want to find the value of z such that B( z) B( 0) 0 0 3 = 3 ( z + R ) ( R ) =. 3 R R ( z R ) z R z R(
More information1. Four equal and positive charges +q are arranged as shown on figure 1.
AP Physics C Coulomb s Law Free Response Problems 1. Four equal and positive charges +q are arranged as shown on figure 1. a. Calculate the net electric field at the center of square. b. Calculate the
More informationSolutions to PHY2049 Exam 2 (Nov. 3, 2017)
Solutions to PHY2049 Exam 2 (Nov. 3, 207) Problem : In figure a, both batteries have emf E =.2 V and the external resistance R is a variable resistor. Figure b gives the electric potentials V between the
More informationPHYS 241 EXAM #2 November 9, 2006
1. ( 5 points) A resistance R and a 3.9 H inductance are in series across a 60 Hz AC voltage. The voltage across the resistor is 23 V and the voltage across the inductor is 35 V. Assume that all voltages
More informationPractice Exam 1. Necessary Constants and Equations: Electric force (Coulomb s Law): Electric field due to a point charge:
Practice Exam 1 Necessary Constants and Equations: Electric force (Coulomb s Law): Electric field due to a point charge: Electric potential due to a point charge: Electric potential energy: Capacitor energy:
More informationPART A. 4cm 1 =1.4 1 =1.5. 5cm
PART A Straight Objective Type This section contains 30 multiple choice questions. Each question has 4 choices (1), (), (3) and (4) for its answer, out of which ONLY ONE is correct. 1. The apparent depth
More information( )( )( ) Model: The magnetic field is that of a moving charged particle. Visualize: 10 T m/a C m/s sin T. 1.
33.3. Model: The magnetic field is that of a moving charged particle. Visualize: The first point is on the x-axis, with θ a = 90. The second point is on the y-axis, with θ b = 180, and the third point
More informationExam 2 Solutions. PHY2054 Spring Prof. Paul Avery Prof. Pradeep Kumar Mar. 18, 2014
Exam 2 Solutions Prof. Paul Avery Prof. Pradeep Kumar Mar. 18, 2014 1. A series circuit consists of an open switch, a 6.0 Ω resistor, an uncharged 4.0 µf capacitor and a battery with emf 15.0 V and internal
More informationMagnets. Domain = small magnetized region of a magnetic material. all the atoms are grouped together and aligned
Magnetic Fields Magnets Domain = small magnetized region of a magnetic material all the atoms are grouped together and aligned Magnets Ferromagnetic materials domains can be forced to line up by applying
More informationCHAPTER 4: MAGNETIC FIELD
CHAPTER 4: MAGNETIC FIELD PSPM II 2005/2006 NO. 4 4. FIGURE 3 A copper rod of mass 0.08 kg and length 0.20 m is attached to two thin current carrying wires, as shown in FIGURE 3. The rod is perpendicular
More informationPhys 2B Final Exam Name:
Phys 2B Final Exam Name: Multiple Choice (3 points each) 1. Two capacitors initially uncharged are connected in series to a battery, as shown. What is the charge on the top plate of C 1? a. 81 μc b. 18
More informationPhysics 126 Fall 2004 Practice Exam 1. Answer will be posted about Oct. 5.
Physics 126 Fall 2004 Practice Exam 1. Answer will be posted about Oct. 5. 1. Which one of the following statements best explains why tiny bits of paper are attracted to a charged rubber rod? A) Paper
More informationHOMEWORK 1 SOLUTIONS
HOMEWORK 1 SOLUTIONS CHAPTER 18 3. REASONING AND SOLUTION The total charge to be removed is 5.0 µc. The number of electrons corresponding to this charge is N = ( 5.0 10 6 C)/( 1.60 10 19 C) = 3.1 10 13
More informationQ1. A wave travelling along a string is described by
Coordinator: Saleem Rao Wednesday, May 24, 2017 Page: 1 Q1. A wave travelling along a string is described by y( x, t) = 0.00327 sin(72.1x 2.72t) In which all numerical constants are in SI units. Find the
More informationT10 [186 marks] y 2. w 2
T10 [186 marks] 1. A particle of charge q is at point S in a uniform electric field of strength E. The particle moves a distance w parallel to the field lines and then a distance y perpendicular to the
More informationFigure 1 A) 2.3 V B) +2.3 V C) +3.6 V D) 1.1 V E) +1.1 V Q2. The current in the 12- Ω resistor shown in the circuit of Figure 2 is:
Term: 13 Wednesday, May 1, 014 Page: 1 Q1. What is the potential difference V B -V A in the circuit shown in Figure 1 if R 1 =70.0 Ω, R=105 Ω, R 3 =140 Ω, ε 1 =.0 V and ε =7.0 V? Figure 1 A).3 V B) +.3
More information2R R R 2R. Phys Test 1
Group test. You want to calculate the electric field at position (x o, 0, z o ) due to a charged ring. The ring is centered at the origin, and lies on the xy plane. ts radius is and its charge density
More informationChapter 12. Magnetism and Electromagnetism
Chapter 12 Magnetism and Electromagnetism 167 168 AP Physics Multiple Choice Practice Magnetism and Electromagnetism SECTION A Magnetostatics 1. Four infinitely long wires are arranged as shown in the
More informationPHYS 1102 EXAM - II. SECTION: (Circle one) 001 (TH 9:30 AM to 10:45AM) 002 (TH 3:30 PM to 4:45 PM) You have 1 hr 45 minutes to complete the test
PHYS 1102 EXAM - II SECTION: (Circle one) 001 (TH 9:30 AM to 10:45AM) 002 (TH 3:30 PM to 4:45 PM) Your Name: Student ID: You have 1 hr 45 minutes to complete the test PLEASE DO NOT START TILL YOU ARE INSTRUCTED
More informationAP Physics Electromagnetic Wrap Up
AP Physics Electromagnetic Wrap Up Here are the glorious equations for this wonderful section. This is the equation for the magnetic force acting on a moving charged particle in a magnetic field. The angle
More informationDiscussion Question 7A P212, Week 7 RC Circuits
Discussion Question 7A P1, Week 7 RC Circuits The circuit shown initially has the acitor uncharged, and the switch connected to neither terminal. At time t = 0, the switch is thrown to position a. C a
More informationis acting on a body of mass m = 3.0 kg and changes its velocity from an initial
PHYS 101 second major Exam Term 102 (Zero Version) Q1. A 15.0-kg block is pulled over a rough, horizontal surface by a constant force of 70.0 N acting at an angle of 20.0 above the horizontal. The block
More informationPhysics 12 Examination Booklet 2007/2008 Released Exam January Form A
Physics 12 Examination Booklet 2007/2008 Released Exam January 2008 Form A DO NOT OPEN ANY EXAMINATION MATERIALS UNTIL INSTRUCTED TO DO SO. FOR FURTHER INSTRUCTIONS REFER TO THE RESPONSE BOOKLET. Contents:
More informationUnit 8: Electromagnetism
Multiple Choice Portion Unit 8: Electromagnetism 1. Four compasses are placed around a conductor carrying a current into the page, as shown below. Which compass correctly shows the direction of the magnetic
More informationCHAPTER 27 HOMEWORK SOLUTIONS
CHAPTER 7 HOMEWORK SOLUTIONS 7.1. IDENTIFY and SET UP: Apply Eq.(7.) to calculate F. Use the cross products of unit vectors from Section 1.10. EXECUTE: v 4.1910 4 m/siˆ 3.8510 4 m/s ˆj (a) B 1.40 Tˆ i
More informationis at the origin, and charge q μc be located if the net force on q
Term: 152 Saturday, April 09, 2016 Page: 1 Q1. Three point charges are arranged along the x-axis. Charge q 3.0 0 μc 1 is at the origin, and charge q 5.0 0 μc 2 is at x = 0.200 m. Where should a third charge
More informationPHYS 1444 Section 02 Review #2
PHYS 1444 Section 02 Review #2 November 9, 2011 Ian Howley 1 1444 Test 2 Eq. Sheet Terminal voltage Resistors in series Resistors in parallel Magnetic field from long straight wire Ampére s Law Force on
More informationPhysics 12 January 2000 Provincial Examination
Physics 12 January 2000 Provincial Examination ANSWER KEY / SCORING GUIDE Organizers CURRICULUM: Sub-Organizers 1. Vector Kinematics in Two Dimensions A, B and Dynamics and Vector Dynamics C, D 2. Work,
More informationPhysics 212 / Summer 2009 Name: ANSWER KEY Dr. Zimmerman Ch. 26 Quiz
Physics 1 / Summer 9 Name: ANSWER KEY h. 6 Quiz As shown, there are three negatie charges located at the corners of a square of side. There is a single positie charge in the center of the square. (a) Draw
More information24 m / s. 4. The units N / kg are used for A. net force. B. gravitational force. C. electric field strength. D. gravitational field strength.
PHYSICS 12 JUNE 2004 PROVINCIAL EXAMINATION PART A: MULTIPLE CHOICE 1. Which of the following is a scalar quantity? A. work B. force C. velocity D. momentum 2. An astronaut on the moon throws a 5.0 kg
More informationGeneral Physics (PHYC 252) Exam 4
General Physics (PHYC 5) Exam 4 Multiple Choice (6 points). Circle the one best answer for each question. For Questions 1-3, consider a car battery with 1. V emf and internal resistance r of. Ω that is
More information1 Fig. 3.1 shows the variation of the magnetic flux linkage with time t for a small generator. magnetic. flux linkage / Wb-turns 1.
1 Fig. 3.1 shows the variation of the magnetic flux linkage with time t for a small generator. 2 magnetic 1 flux linkage / 0 10 2 Wb-turns 1 2 5 10 15 t / 10 3 s Fig. 3.1 The generator has a flat coil
More informationθ θ θ θ current I Fig. 6.1 The conductor and the magnetic field are both in the plane of the paper. State
3 1 (a) A straight conductor carrying a current I is at an angle θ to a uniform magnetic field of flux density B, as shown in Fig. 6.1. magnetic field, flux density B θ θ θ θ current I Fig. 6.1 The conductor
More informationBROCK UNIVERSITY SOLUTIONS
BROCK UNIVERSITY Mid-term Test 3: July 2014 Number of pages: 7 (+ formula sheet) Course: PHYS 1P22/1P92 Number of students: 38 Examination date: 10 July 2014 Number of hours: 1 Time of Examination: 18:00
More information= 8.89x10 9 N m 2 /C 2
PHY303L Useful Formulae for Test 2 Magnetic Force on a moving charged particle F B = q v B Magnetic Force on a current carrying wire F B = i L B Magnetic dipole moment µ = NiA Torque on a magnetic dipole:
More informationMagnets and Electromagnetism
Review 9 Magnets and Electromagnetism 1. A 1.2 cm wire carrying a current of 0.8 A is perpendicular to a 2.4 T magnetic field. What is the magnitude of the force on the wire? 2. A 24 cm length of wire
More information---------------------------------------------------------------------------------------------------------- PHYS 2326 University Physics II Class number ---------------------------------------------------------------------------------------------------------------------
More information1. The diagram shows the electric field lines produced by an electrostatic focussing device.
1. The diagram shows the electric field lines produced by an electrostatic focussing device. Which one of the following diagrams best shows the corresponding equipotential lines? The electric field lines
More informationExam 2 Solutions. ε 3. ε 1. Problem 1
Exam 2 Solutions Problem 1 In the circuit shown, R1=100 Ω, R2=25 Ω, and the ideal batteries have EMFs of ε1 = 6.0 V, ε2 = 3.0 V, and ε3 = 1.5 V. What is the magnitude of the current flowing through resistor
More informationPHYS General Physics for Engineering II FIRST MIDTERM
Çankaya University Department of Mathematics and Computer Sciences 2010-2011 Spring Semester PHYS 112 - General Physics for Engineering II FIRST MIDTERM 1) Two fixed particles of charges q 1 = 1.0µC and
More information( ) + ( +kq 2 / L) + 2 ( kq2 / 2L) + ( +kq2 / 3L) =
Exam 3 Solutions Prof. Paul Avery Prof. Pradeep Kumar Apr. 6, 014 1. Four charges are placed along a straight line each separated by a distance L from its neighbor. The order of the charges is +Q, Q, Q,
More informationAn ion follows a circular path in a uniform magnetic field. Which single change decreases the radius of the path?
T5-1 [237 marks] 1. A circuit is formed by connecting a resistor between the terminals of a battery of electromotive force (emf) 6 V. The battery has internal resistance. Which statement is correct when
More informationAP Physics C 1998 Multiple Choice Questions Electricity and Magnetism
AP Physics C 1998 Multiple Choice Questions Electricity and Magnetism The materials included in these files are intended for use by AP teachers for course and exam preparation in the classroom; permission
More informationElectrostatics. 4πε 2) + Q / 2 4) 4 Q
Two spheres A and B of radius a and b respectively are at the same potential The ratio of the surface charge density of A to B is: ) a / b ) b / a a / b b / a Two free protons are separated by a distance
More informationPhysics 2212 G Quiz #4 Solutions Spring 2018 = E
Physics 2212 G Quiz #4 Solutions Spring 2018 I. (16 points) The circuit shown has an emf E, three resistors with resistance, and one resistor with resistance 3. What is the current through the resistor
More informationYell if you have any questions
Class 36: Outline Hour 1: Concept Review / Overview PRS Questions Possible Exam Questions Hour : Sample Exam Yell if you have any questions P36-1 Before Starting All of your grades should now be posted
More informationHW7: Ch. 26 P 34, 36 Ch.27 Q 2, 4, 8, 18 P 2, 8, 17, 19, 37
Fall 12 PHY 122 Homework Solutions #7 HW7: Ch. 26 P 34, 36 Ch.27 Q 2, 4, 8, 18 P 2, 8, 17, 19, 37 Chapter 26 Problem 34 Determine the magnitudes and directions of the currents in each resistor shown in
More informationYell if you have any questions
Class 36: Outline Hour 1: Concept Review / Overview PRS Questions Possible Exam Questions Hour : Sample Exam Yell if you have any questions P36-1 efore Starting All of your grades should now be posted
More informationPhys101 First Major-111 Zero Version Monday, October 17, 2011 Page: 1
Monday, October 17, 011 Page: 1 Q1. 1 b The speed-time relation of a moving particle is given by: v = at +, where v is the speed, t t + c is the time and a, b, c are constants. The dimensional formulae
More informationHomework (lecture 11): 3, 5, 9, 13, 21, 25, 29, 31, 40, 45, 49, 51, 57, 62
Homework (lecture ): 3, 5, 9, 3,, 5, 9, 3, 4, 45, 49, 5, 57, 6 3. An electron that has velocity: moves through the uniform magnetic field (a) Find the force on the electron. (b) Repeat your calculation
More informationExam 2 Solutions. Answer: 3.0 W Solution: The total current is in the series circuit is 1 A, so the power dissipated in R 2 is i 2 R 2
Exam 2 Solutions Prof. Pradeep Kumar Prof. Paul Avery Mar. 21, 2012 1. A portable CD player does not have a power rating listed, but it has a label stating that it draws a maximum current of 159.0 ma.
More informationPHYSICSCATALYST.COM. CBSE Sample Paper 9
CBSE Sample Paper 9 General Instruction: 1. Answer all questions 2. Internal choices are provided for some questions 3. Question numbers 1 to 8 are very short answer questions and carry 1 mark each. 4.
More informationPHYS 212 Final Exam (Old Material) Solutions - Practice Test
PHYS 212 Final Exam (Old Material) Solutions - Practice Test 1E If the ball is attracted to the rod, it must be made of a conductive material, otherwise it would not have been influenced by the nearby
More informationModule M2-1 Electrical Engineering. Natural phenomena and engineering applications. Topics. After this tutorial, you will be able to
Module M2-1 Electrical Engineering LECTURE 7 TME-VRYNG FELD MXWELL EQUTON 1 Topics Natural phenomena and engineering applications of time-varying magnetic fields Faraday s law Lenz s law Maxwell s equations
More informationPhysics 12 August 2001 Provincial Examination
Physics 12 August 2001 Provincial Examination ANSWER KEY / SCORING GUIDE Organizers CURRICULUM: Sub-Organizers 1. Vector Kinematics in Two Dimensions A, B and Dynamics and Vector Dynamics C, D 2. Work,
More informationClassical Electromagnetism
Classical Electromagnetism Workbook David Michael Judd Problems for Chapter 33 1.) Determine the number of electrons in a pure sample of copper if the sample has a mass of M Cu = 0.00250 kg. The molecular
More informationLecture 32: MON 09 NOV Review Session A : Midterm 3
Physics 2113 Jonathan Dowling Lecture 32: MON 09 NOV Review Session A : Midterm 3 EXAM 03: 6PM WED 11 NOV in Cox Auditorium The exam will cover: Ch.27.4 through Ch.30 The exam will be based on: HW08 11
More informationPhys102 Second Major-133 Zero Version Coordinator: A.A.Naqvi Tuesday, August 05, 2014 Page: 1
Coordinator: A.A.Naqvi Tuesday, August 05, 2014 Page: 1 Q1. igure 1 shows four situations in which a central proton (P) is surrounded by protons or electrons fixed in place along a half-circle. The angles
More information1. Write the relation for the force acting on a charge carrier q moving with velocity through a magnetic field in vector notation. Using this relation, deduce the conditions under which this force will
More informationPHY 2049 FALL 2000 EXAM 1
PHY 09 FALL 000 EXAM 1 1. Figure below shows three arrangements of electric field lines. A proton is released from point X. It is accelerated by the electric field toward point Y. Points X and Y have eual
More informationPHY 2049 SPRING 2001 EXAM 3
PHY 2049 SPING 2001 EXAM 3 1. A negatively charged particle moves with velocity v in a uniform magnetic field as shown in figure (both vector and vector v are in the plane of the paper). What is the direction
More informationGeneral Review. LECTURE 16 Faraday s Law of Induction
Electrostatics General Review Motion of q in eternal E-field E-field generated b Sq i Magnetostatics Motion of q and I in eternal B-field B-field generated b I Electrodnamics Time dependent B-field generates
More informationExam 4 Solutions. a. 1,2,and 3 b. 1 and 2, not 3 c. 1 and 3, not 2 d. 2 and 3, not 1 e. only 2
Prof. Darin Acosta Prof. Greg Stewart April 8, 007 1. Which of the following statements is true? 1. In equilibrium all of any excess charge stored on a conductor is on the outer surface.. In equilibrium
More informationBRITISH PHYSICS OLYMPIAD BPhO Round 1 Section 2 18 th November 2016
BRITISH PHYSICS OLYMPIAD 2016-17 BPhO Round 1 Section 2 18 th November 2016 Instructions This question paper must not be taken out of the exam room. Time: 1 hour 20 minutes on this section. Questions:
More informationGet Discount Coupons for your Coaching institute and FREE Study Material at Force System
Get Discount Coupons for your Coaching institute and FEE Study Material at www.pickmycoaching.com Mechanics Force System When a member of forces simultaneously acting on the body, it is known as force
More information3. In the adjacent figure, E 1 = 6.0 V, E 2 = 5.5 V, E 3 = 2.0 V, R 1 = 1W, and R 2 = 6W. All batteries are ideal. Find the current in resistor R 1.
1. A cylindrical copper rod of length L and cross-sectional area A is re-formed to twice its original length with no change in volume. If the resistance between its ends was originally R, what is it now?
More informationProfs. D. Acosta, A. Rinzler, S. Hershfield. Exam 1 Solutions
PHY2049 Spring 2009 Profs. D. Acosta, A. Rinzler, S. Hershfield Exam 1 Solutions 1. What is the flux through the right side face of the shown cube if the electric field is given by E = 2xî + 3yĵ and the
More informationPhysics 2220 Fall 2010 George Williams THIRD MIDTERM - REVIEW PROBLEMS
Physics 2220 Fall 2010 George Williams THIRD MIDTERM - REVIEW PROBLEMS Solution sets are available on the course web site. A data sheet is provided. Problems marked by "*" do not have solutions. 1. An
More information2 4πε ( ) ( r θ. , symmetric about the x-axis, as shown in Figure What is the electric field E at the origin O?
p E( r, θ) = cosθ 3 ( sinθ ˆi + cosθ ˆj ) + sinθ cosθ ˆi + ( cos θ 1) ˆj r ( ) ( p = cosθ sinθ ˆi + cosθ ˆj + sinθ cosθ ˆi sinθ ˆj 3 r where the trigonometric identit ( θ ) vectors ˆr and cos 1 = sin θ
More informationPhysics 1B Spring 2010: Final Version A 1 COMMENTS AND REMINDERS:
Physics 1B Spring 2010: Final Version A 1 COMMENTS AND REMINDERS: Closed book. No work needs to be shown for multiple-choice questions. 1. Four charges are at the corners of a square, with B and C on opposite
More informationPhysics 102: Magnetic Fields
Physics 102: Magnetic Fields Assist. Prof. Dr. Ali Övgün EMU Physics Department www.aovgun.com Electric Field & Magnetic Field Electric forces acting at a distance through electric field. Vector field,
More information1 cm b. 4.4 mm c. 2.2 cm d. 4.4 cm v
PHY 112: General Physics M. F. Thorpe T, Th 7:40-8:55am Fall 2006 Department of Physics Arizona State University Tempe AZ Final, Friday 8 December from 7:40am -> 9.30am All questions carry equal weight.
More information(483 km) ( 966 km) km. tan km
Chapter 4 8 Our coordinate system has i pointed east and j pointed north The first displacement is r (483 km)i ˆ AB and the second is r ( 966 km)j ˆ BC (a) The net displacement is r (483 km)i ˆ (966 km)j
More informationExam 2 Solutions. Note that there are several variations of some problems, indicated by choices in parentheses.
Exam 2 Solutions Note that there are several variations of some problems, indicated by choices in parentheses. Problem 1 Part of a long, straight insulated wire carrying current i is bent into a circular
More informationMagnetic field and magnetic poles
Magnetic field and magnetic poles Magnetic Field B is analogically similar to Electric Field E Electric charges (+ and -)are in analogy to magnetic poles(north:n and South:S). Paramagnetism, Diamagnetism,
More informationGeneral Physics (PHY 2140)
General Physics (PHY 2140) Lecture 2 Electrostatics Electric flux and Gauss s law Electrical energy potential difference and electric potential potential energy of charged conductors http://www.physics.wayne.edu/~alan/
More informationA mass is suspended by a string from a fixed point. The mass moves with constant speed along a circular path in a [1 mark] horizontal plane.
T6 [200 marks] 1. A mass is suspended by a string from a fixed point. The mass moves with constant speed along a circular path in a horizontal plane. The resultant force acting on the mass is A. zero.
More information2. Draw the Magnetic Field lines created by the below two bar magnets. Homework 3. Draw the Magnetic Field lines created by the below bar magnets.
Chapter Problems Magnetic Fields 1. Draw the Magnetic Field lines created by the below bar magnet. S N 2. Draw the Magnetic Field lines created by the below two bar magnets S N N S 3. Draw the Magnetic
More informationSolutions Midterm Exam 1 October 3, surface. You push to the left on the right block with a constant force F.
Problem 1 (2.5 points) Two blocks of mass m 1 and m 3, connected by a rod of mass m 2, are sitting on a frictionless surface. You push to the left on the right block with a constant force F. What is the
More information( ) ( ) A i ˆj. What is the unit vector  that points in the direction of A? 1) The vector A is given by = ( 6.0m ) ˆ ( 8.0m ) Solution A D) 6 E) 6
A i ˆj. What is the unit vector  that points in the direction of A? 1) The vector A is given b ( 6.m ) ˆ ( 8.m ) A ˆ i ˆ ˆ j A ˆ i ˆ ˆ j C) A ˆ ( 1 ) ( i ˆ ˆ j) D) Aˆ.6 iˆ+.8 ˆj E) Aˆ.6 iˆ.8 ˆj A) (.6m
More informationxˆ z ˆ. A second vector is given by B 2xˆ yˆ 2z ˆ.
Directions for all homework submissions Submit your work on plain-white or engineering paper (not lined notebook paper). Write each problem statement above each solution. Report answers using decimals
More informationPhysics 12 January 2001 Provincial Examination
Physics 12 January 2001 Provincial Examination ANSWER KEY / SCORING GUIDE Organizers CURRICULUM: Sub-Organizers 1. Vector Kinematics in Two Dimensions A, B and Dynamics and Vector Dynamics C, D 2. Work,
More information