Practice Quiz

AP Physics B Practice Exam - Question List

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1. In a large room, a sound wave traveling from a violin produces a tone with a frequency of 264 Hz. The speed of sound in the room is 340 m/s.What is the wavelength of the sound wave from the violin?
  1. 0.004 m
  2. 0.80 m
  3. 1.3 m
  4. 2.6 m
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2. Which of the following statements describes the electric force betweentwo oppositely charged particles as they approach each other?
  1. The attractive electric force increases.
  2. The electric force becomes repulsive.
  3. The magnitude of the electric force decreases.
  4. The repulsive electric force becomes attractive.
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3. A student leaving school walks 2.5 km north and then walks 1.0 km south. What is the student’s displacement?
  1. 1.0 km south
  2. 1.5 km north
  3. 2.5 km north
  4. 3.5 km south
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4. A student touches a metal sink with her finger and notices that her finger feels cold. Which of the following statements explains this observation?
  1. Heat energy flows from the student’s finger to the metal sink.
  2. Heat energy flows from the metal sink to the student’s finger.
  3. The student’s finger was originally at the same temperature as the sink.
  4. The student’s finger was originally at a lower temperature than the sink.
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5. A student pushes a book across a classroom table. Which of the following statements best explains the difference between the amount of force needed to start the book moving and the amount of force needed to keep it moving?
  1. Less force is needed to start the book moving, because there is less friction than when it is already moving.
  2. Less force is needed to start the book moving, because there is less potential energy in the table than in the book.
  3. More force is needed to start the book moving, because there is more potential energy in the table than in the book.
  4. More force is needed to start the book moving, because there is more friction than when it is already moving.
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