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Author Question: A standing wave is oscillating at 690 Hz on a string, as shown in the figure. What is the speed of ... (Read 394 times)

mynx

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on: Jul 29, 2018
A standing wave is oscillating at 690 Hz on a string, as shown in the figure. What is the speed of traveling waves on this string?
 
  A) 280 m/s
  B) 410 m/s
  C) 210 m/s
  D) 140 m/s

Question 2

A 1.0-g string that is 0.64 m long is fixed at both ends and is under tension. This string produces a 100-Hz tone when it vibrates in the third harmonic. The speed of sound in air is 344 m/s. The tension in the string, in is closest to
 
  A) 2.8 N.
  B) 2.3 N.
  C) 1.8 N.
  D) 3.4 N.
  E) 3.9 N.


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JaynaD87

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Reply #1 on: Jul 29, 2018
Answer to Question 1

Answer: A

Answer to Question 2

Answer: A


mynx

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Reply #2 on: Jul 29, 2018
Thank you!


JaynaD87

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Reply #3 on: Jul 29, 2018
Always glad to help...


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