1988 Physics B - Multiple-Choice

64 which of the following statements is true of a

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64. Which of the following statements Is true of a beta Particle? (A) Its speed in a vacuum is 3 x 10 8 m/s. (B) It has a charge equal and opposite to that of an alpha particle. (C) It is more penetrating than a gamma ray of the same energy. (D) It has a mass of about 1,840 times that of a proton. (E) It can exhibit wave properties. 65. A space traveler is moving relative to the Earth at 2.4 x 10 8 meters per second (0.8 c), as measured in the Earth's frame of reference. In one year as measured in the Earth's frame of reference, the space traveler will do which of the following? (A) Travel 0.6 light-year and age 0.6 year. (B) Travel 0.8 light-year and age 0.6 year. (C) Travel 0.8 light-year and age 1 year. (D) Travel 0.8 light-year and age 1.67 years. (E) Travel 1 light-year and age 1 year. Questions 66-67 An electron and a positron, each of mass 9.1 x 10 -31 kilogram, are in the same general vicinity and have very small initial speeds. They then annihilate each other, producing two photons. 66. What is the approximate energy of each emerging photon? (A) 0.51 MeV (B) 2.0 MeV (C) 4.0 MeV (D) 6.6 MeV (E) It cannot be determined unless the frequency o the photon is known. 67. What is the angle between the paths of the emerging photons? (A) 0° (B) 30º (C) 45° (D) 90° (E) 180° 68. In the circuit shown above, the value of r for which the current I is 0.5 ampere is (A) 0 : (B) 1 : (C) 5 : (D) 10 : (E) 20 :
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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. 69. An object is attached to a spring and oscillates with amplitude A and period T, as represented on the graph above. The nature of the velocity v and acceleration a of the object at time T/4 is best represented by which of the following? (A) v > 0, a > 0 (B) v > 0, a < 0 (C) v > 0, a = 0 (D) v = 0, a < 0 (E) v = 0, a = 0 70. Gas in a chamber passes through the cycle ABCA as shown in the diagram above. In the process AB, 12 joules of heat is added to the gas. In the process BC, no heat is exchanged with the gas. For the complete cycle ABCA, the work done by the gas is 8 joules. How much heat is added to or removed from the gas during process CA ? (A) 20 J is removed. (B) 4 J is removed. (C) 4 J is added. (D) 20 J is added. (E) No heat is added to or removed from the gas.
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  • Spring '10
  • Wei
  • Physics, Acceleration, Force, Magnetic Field, College Entrance Examination Board, college entrance examination, Entrance Examination Board

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