PROVE: Inverse Square Law for Sound A law of physics states that the intensity of sound is inversely proportional to the square of the distance d from the source: I = k/d?. (a) Use this model and the equation B = 10 log (described in this section) to show that the decibel levels Bị and B, at distances di and d, from a sound source are related by the equation B, = B, + 20 log dz (b) The intensity level at a rock concert is 120 dB at a dis- tance 2 m from the speakers. Find the intensity level at a distance of 10 m.

PROVE: Inverse Square Law for Sound A law of physics states that the intensity of sound is inversely proportional to the square of the distance d from the source: I = k/d?. (a) Use this model and the equation B = 10 log (described in this section) to show that the decibel levels Bị and B, at distances di and d, from a sound source are related by the equation B, = B, + 20 log dz (b) The intensity level at a rock concert is 120 dB at a dis- tance 2 m from the speakers. Find the intensity level at a distance of 10 m.

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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