AP Physics 1 Question 259: Answer and Explanation

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Question: 259

5. A string, fixed at both ends, has a length of 6 m and supports a standing wave with a total of 4 nodes. If a transverse wave can travel at 40 m/s down the rope, what is the frequency of this standing wave?

  • A. 6.7 Hz
  • B. 10 Hz
  • C. 20 Hz
  • D. 26.7 Hz

Correct Answer: B

Explanation:

B

The previous question showed that λ = 4 m. Since v = 40 m/s, the frequency of this standing wave must be