A person standing 1.10 m from a portable speaker hears its sound at an intensity of 3.90 x 10-³ W/m².

College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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A person standing 1.10 m from a portable speaker hears its sound at an intensity of 3.90 x 10-³
W/m².
HINT
(a) Find the corresponding decibel level.
dB
(b) Find the sound intensity (in W/m²) at a distance of 36.0 m, assuming the sound propagates as a spherical wave.
W/m²
(c) Find the decibel level at a distance of 36.0 m.
dB
Transcribed Image Text:A person standing 1.10 m from a portable speaker hears its sound at an intensity of 3.90 x 10-³ W/m². HINT (a) Find the corresponding decibel level. dB (b) Find the sound intensity (in W/m²) at a distance of 36.0 m, assuming the sound propagates as a spherical wave. W/m² (c) Find the decibel level at a distance of 36.0 m. dB
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