Summer AP Assignment 2016

Transcription

1 Summer AP Assignment 2016 Mr. Michael Wichart (Rm. 109) Summer Assignment Goals The main goal of this assignment is to review some of the material that was taught during Honors Physics. Much of this material will be re-introduced to you in AP, with the addition of 2-D motion. For help on this assignment, you can refer to NJCTL.org or any of your other PPT s, or problems from this past year. The website will have PPT s, as well as chapter text to review any concept that you cannot recall. Honors Physics Summer Assignment Review the material in the summer packet and complete all questions. It will be due on the first day of school. This assignment will be graded and counted toward your 1 st marking period grade. In order to receive credit for completing the assignment, be sure to show all of your work and make sure that all of your answers have the correct number of units and, for problems dealing with significant figures, the correct number of significant figures. A grade will be given for Content (Ability to show proper units and label answers appropriately), Application (Ability to apply the given information to the equation, or manipulate the equations properly to solve), and 21 st Century (Ability to hand in the assignment on time and completed as requested).

2 NAME: 1. Starting from the origin, a car travels 4 km east and then 7 km west. What is the net displacement of the car from the initial point? A. 3 km, west B. 3 km, east C. 4 km, east D. 7 km, west E. 7 km east 2. A race car moving west begins to slow down after crossing a finish line. Which of the following is the correct direction of the car s acceleration? A. B. C. D. E. 3. A loaded truck collides with a car causing a huge damage to the car. Which of the following is true about the collision? A. The force on the truck is greater than the force. B. The force on the car is greater than the force on the truck. C. The force on the truck is the same in magnitude as the force on the car. D. During the collision the truck makes greater displacement than the car. E. During the collision the truck has greater acceleration than the car. 4. In the figure to the below, two boxes of masses m and 4m are in contact with each other on a frictionless surface. What is the acceleration of the more massive box? A. F/m B. F/(2m) C. F/(4m) D. F/(5m) E. F/(6m) 5. A car moves around a circular path of a constant radius at a constant speed. At the moment of the car s location its acceleration is? A. B. C. D. E.

3 6. An object travels in a circular path of radius r at a constant speed v. What happens to the object s acceleration if the speed is doubled and the radius stays unchanged? A. It doubles B. It quadruples C. It is cut to a half D. It is cut to a quarter E. Stays unchanged 7. Two objects are attracted to each other by a gravitational force F. If the distance between the objects is doubled, what is the new gravitational force between the objects in terms of F? A. 4 F B. 9 F C. 16 F D. 1/9 F E. 1/4 F 8. An object with a mass of 60 kg measured on Earth is taken to the Moon. What is the mass of the object on the Moon s surface if the acceleration due to gravity on Moon is one-sixth of that on Earth? A. 6 kg B. 10 kg C. 12 kg D. 60 kg E. 600 kg 9. The force as a function of displacement of a moving object is presented by the graph. How much work is done when the object moves from 0 m to 8 m? A. 30 J B. 15 J C. 18 J D. 9 J E. 24 J 10. Block A with a mass m moves on a frictionless horizontal surface at a constant velocity v and collides elastically with an identical block B. What is the velocity of block B after the collision? A. 0 m/s B. v C.! " v D.! # v E. " # v

4 11. A tennis ball approaches a racket with a momentum of 3 kg m/s and bounces back with a momentum of 2 kg m/s after the collision with the racket. What is the change in momentum of the tennis ball? A. 1 kg m/s B. 5 kg m/s C. 6 kg m/s D. 11 kg m/s E. 0 kg m/s 12. A negatively charged rod is brought near an uncharged, grounded electroscope. Which of the following statements is true? A. The positive charge flows from the electroscope to the ground B. The positive charge flows from the ground to the electroscope C. The negative charge flows from the electroscope to the ground D. The negative charge flows from the ground to the electroscope E. The electroscope stays nutral because the rod doesn t touch it 13. A positively charged sphere with a charge of +8Q is separatred from a negatively charged sphere -2Q by a distance r. The charge briefly touch each other and move to the original distance r. What is the new charge on each sphere after they move to the distance r? A. Q B. 2 Q C. 3 Q D.! " Q E.! % Q

5 14. An electric field due to a positive charge is represented by the diagram. Which of the following points has higher potential? A. A B. B C. C D. D E. E 15. All of the following wires are made of the same material but are different sizes. Identify the wire with the lowest resistance. A. B. C. D. E. 16. A 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? A. B. C. D. E.

6 17. A 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? A. There is an electric repulsive force between the broken pieces B. There is an electric attractive force between the broken pieces C. There is a magnetic repulsive force between the broken pieces D. There is a magnetic attractive force between the broken pieces E. There is no force between the broken pieces since they are demagnetized 18. A current-carrying wire is placed perpendicularly to the page. Determine the direction of the electric current from the direction of the magnetic field. A. Into the page B. Out of the page C. Clockwise D. Counter-clockwise E. To the left 19. A 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? A. Clockwise B. Counter-clockwise C. Out of the page D. Into the page E. There is no induced current in the loop 20. When the mass reaches point x = +A its instantaneous acceleration is? A. Maximum and positive B. Maximum and negative C. Zero D. Slightly less than maximum and positive E. Slightly less than maximum and negative

7 21. A mass-spring oscillating system undergoes SHM. Which of the following graphs represents the elastic potential energy as a function of position? A. B. C. D. E. 22. A 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 Transmitted pulse A. Upright Upright B. Inverted Inverted C. Upright Inverted D. Inverted Upright E. Zero amplitude Zero amplitude

8 23. 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? A. It is constructive interference with twice the amplitude B. It is destructive interference with zero amplitude C. It is constructive interference with slightly greater amplitude D. It is constructive interference with the negative amplitude E. The standing wave is produced

9 1. A track consists of an arc and a straight horizontal path. A 2 kg block is released from rest at point A. At point B it has a velocity of 5 m/s. Then it collides and sticks to an identical block at rest and they slide into and compress a spring with a spring constant of 200 N/m. Ignore friction between the block and the track surface. a. What is the vertical distance (height) between point A and point B? b. What is the velocity of the two blocks after the collision? c. How far do the blocks compress the spring before coming to a momentary stop?

10 2. Three resistors of fixed resistance R 1 = 2Ω, R 2 = 4Ω, R 3 = 4Ω, an 18 V battery and a switch are connected as shown in the schematic diagram above. a. Calculate the net resistance of the circuit. b. Calculate the current in resistor R 1. c. Find the voltage across resistor R 1. d. Calculate the current in resistor R 3. e. How much power is dissipated in this circuit?

11 3. A proton with a mass of 1.67x10-27 kg and charge of 1.6x10-19 C is accelerated from rest in the plane of the page through a potential difference of 0.5 V between two parallel plates as shown above. The particle is injected through a hole in the right-hand plate into a region of space containing a uniform magnetic field of magnitude of 50 T oriented perpendicular to the plane of the page. The particle curves in a semicircular path and strikes a detector. Neglect relativistic effects throughout this problem. a. State whether the direction of the magnetic field is into the page or out of the page. b. Determine the speed of the proton as it enters the region of the magnetic field B. c. The force exerted on the charged particle by the magnetic field B. d. The distance from the point of injection to the detector.

12 4. A string with a length of 2.5 m resonates in five loops as shown above. The string linear density is 0.05 kg/m and the suspended mass is 0.5 kg. a. What is the wavelength? b. What is the wave speed? c. What is the frequency of oscillations? d. What will happen to the number of loops if the suspended mass is increased?