1988 Physics B - Multiple-Choice

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College Board, Advanced Placement Program, AP, SAT, and the acorn logo are registered trademarks of the College Entrance Examination Board. Questions 11-12: A block oscillates without friction on the end of a spring as shown above. The minimum and maximum lengths of the spring as it oscillates are, respectively, xmin and xmax. The graphs below can represent quantities associated with the oscillation as functions of the length x of the spring. 11. Which graph can represent the total mechanical energy of the block-spring system as a function of x ? (A) A (B) B (C) C (D) D (E) E 12. Which graph can represent the kinetic energy of the block as a function of x ? (A) A (B) B (C) C (D) D (E) E 13. Mars has a mass 1/10 that of Earth and a diameter 1/2 that of Earth. The acceleration of a falling body near the surface of Mars is most nearly (A) 0.25 m/s 2 (B) 0.5 m/s 2 (C) 2 m/s 2 (D) 4 m/s 2 (E) 25 m/s 2 14. The capacitance of a parallel-plate capacitor can be increased by increasing which of the following? (A) The distance between the plates (B) The charge on each plate (C) The area of the plates (D) The potential difference across the plates (E) None of the above 15. The total equivalent resistance between points X and Y in the circuit shown above is (A) 3 Q (B) 4 Q (C) 5 Q (D) 6 Q (E) 7 Q

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1988 AP Physics Multiple choice test Copyright © 1988 by College Entrance Examination Board. All rights reserved. College Board, Advanced Placement Program, AP, SAT, and the acorn logo are registered trademarks of the College Entrance Examination Board. 16. An electron volt is a measure of (A) energy (B) electric field (C) electric potential due to one electron (D) force per unit electron charge (E) electric charge Questions 17-18 An electron is accelerated from rest for a time of 10 -9 second by a uniform electric field that exerts a force of 8.0 x 10 -15 newton on the electron. 17. What is the magnitude of the electric field? (A) 8.0 x 10 -24 N/C (B) 9.1 x 10 -22 N/C (C) 8.0 x 10 -6 N/C (D) 2.0 x 10 -5 N/C (E) 5.0 x 10 4 N/C 18. The speed of the electron after it has accelerated for the 10 -9 second is most nearly (A) 10 1 m/s (B) 10 3 m/s (C) 10 5 m/s (D) 10 7 m/s (E) 10 9 m/s 19. An immersion heater of resistance R converts electrical energy into thermal energy that is transferred to the liquid in which the heater is immersed. If the current in the heater is I, the thermal energy transferred to the liquid in time t is (A) Irt (B) I 2 Rt (C) IR 2 t (D) IRt 2 (E) IR/t 20. A hollow metal sphere of radius R is positively charged. Of the following distances from the center of the sphere, which location will have the greatest electric field strength? (A) 0 (center of the sphere) (B) 3R/2 (C) 5R/4 (D) 2R (E) None of the above because the field is of constant strength 21. A square loop of copper wire is initially placed perpendicular to the lines of a constant magnetic field of 5 x 10 -3 tesla.
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