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AP Physics B Practice Exam

Category - Introductory Physics

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Two students stretch a rope horizontally between them. One student moves one end of the rope up and down repeatedly for a short time.Which of the following describes the frequency of the waves in the rope?

  1. the height that the rope reaches when moved up
  2. the amount of time it takes for one wave to travel the length of the rope
  3. the number of times the rope is moved up and down in a time interval
  4. the distance measured between the crest of one wave and the crest of the next wave in the rope
Explanation
Answer: C - the number of times the rope is moved up and down in a time interval
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