A point source emits sound with a power output of 120 watts. What is its sound intensity level (in dB) at 17.0 meters from the source?

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 46PQ: What is the sound level of a sound wave with intensity 6.40 105 W/m2?
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 A point source emits sound with a power output of
120 watts. What is its sound intensity level (in
dB) at 17.0 meters from the source?

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