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In physics lab, we blew into a pipe and a nearby microphone recorded the frequency of...

In physics lab, we blew into a pipe and a nearby microphone recorded the frequency of the vibrating pipe.

Quesion: The microphone did not actually touch the pipe, so how were the vibrations of the pipe determined?

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Answer #1

the frequency of the viration can be calculated as

f=\frac{nv}{2L}

where

n= number of vibration

v= velocity of sound

L= length of the string

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