Practice Quiz

AP Physics B Practice Exam - Question List

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21. A meteoroid with a mass of 1,000 kg enters Earth’s atmosphere with a locity of 4,400 m/s. What is the magnitude of the meteoroid’s momentum at that instant?
  1. 44 kg • m/s
  2. 2,200,000 kg • m/s
  3. 4,400,000 kg • m/s
  4. 9,680,000,000 kg • m/s
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22. A balloon is inflated with roomtemperature air and then put in a sunny place. The balloon expands slightly due to a rise in temperature.Which of the following best describes the molecules of air inside the balloon when the balloon is left in the sunlight as compared to when it was first inflated?
  1. The molecules are moving faster.
  2. There are more molecules in the balloon.
  3. There are fewer interactions between the molecules.
  4. The molecules stop colliding with the walls of the balloon.
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23. Which of the following properties is the same for all electromagnetic waves in a vacuum?
  1. amplitude
  2. frequency
  3. speed
  4. wavelength
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24. Which of the following conditions results in the buildup of static charge on an object?
  1. when neutrons outnumber electrons
  2. when there are more protons than neutrons
  3. when there are more electrons than protons
  4. when all neutrons have been removed from the object
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25. What is the voltage across the terminals of a 23  resistor that has 0.065 A of current flowing through it?
  1. 0.0028 V
  2. 0.097 V
  3. 1.5 V
  4. 350 V
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