A string is strung horizontally with a fixed tension.A wave of frequency 60.0 Hz is sent along the string,and it has a wave speed of 58.4 m/s.Then a second wave,one of frequency 120 Hz,is sent along the string.What is the wave speed of the second wave?
A)29.2 m/s
B)58.4 m/s
C)117 m/s
D)87.6 m/s
E)234 m/s

Question

A string is strung horizontally with a fixed tension.A wave of frequency 60.0 Hz is sent along the string,and it has a wave speed of 58.4 m/s.Then a second wave,one of frequency 120 Hz,is sent along the string.What is the wave speed of the second wave?​
A)29.2 m/s
B)58.4 m/s
C)117 m/s
D)87.6 m/s
E)234 m/s

Quizplus · Accepted Answer

The wave speed on a string under a fixed tension does not depend on the frequency of the wave. Therefore, if the first wave travels at 58.4 m/s, the second wave, regardless of its frequency, will also travel at 58.4 m/s.

A String Is Strung Horizontally with a Fixed Tension