21. IE (a) If the power of a sound source doubles, the intensity level at a...
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21. IE ••
(a) If the power of a sound source doubles, the intensity level at a certain distance from the source (1) increases, (2) exactly doubles, or (3)
decreases. Why?
(b) What are the intensity levels at a distance of 10 m from a 5.0-W and a 10-W source, respectively?
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Related Book For 
College Physics Essentials Electricity And Magnetism Optics Modern Physics Volume Two
ISBN: 9781032337272
8th Edition
Authors: Jerry D. Wilson, Anthony J. Buffa, Bo Lou
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