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AP Physics B Practice Exam

Category - Introductory Physics

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Measurements inside a sealed container show that the pressure exerted by a gas increases as the thermal energy of the gasincreases.Which of the following best explains this pressure increase?
  1. The gas molecules stick to the walls of the container.
  2. The gas molecules radiate energy in the form of nuclear particles.
  3. The gas molecules begin to bond together into heavier molecules.
  4. The gas molecules move faster and strike the container walls more frequently.
Explanation
Answer: D - The gas molecules move faster and strike the container walls more frequently.
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