A point source emits 58.7 W of sound isotropically. A small microphone intercepts the sound in an area of 0.151 cm², 400 m from the source. Calculate (a) the sound intensity there and (b) the power intercepted by the microphone.

A point source emits 58.7 W of sound isotropically. A small microphone intercepts the sound in an area of 0.151 cm², 400 m from the source. Calculate (a) the sound intensity there and (b) the power intercepted by the microphone.

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter17: Traveling Waves

Section: Chapter Questions

Problem 41PQ

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Question

Please give the answer A number — and a unit — Thank you

*Chapter 17, Problem 035
A point source emits 58.7 W of sound isotropically. A small microphone intercepts the sound in an area
of 0.151 cm², 400 m from the source. Calculate (a) the sound intensity there and (b) the power
intercepted by the microphone.
(a) Number
1
Units
(b) Number
2 Units

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