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Threshold of Pain. You are investigating the report of a

University Physics | 13th Edition | ISBN: 9780321675460 | Authors: Hugh D. Young, Roger A. Freedman ISBN: 9780321675460 31

Solution for problem 26E Chapter 15

University Physics | 13th Edition

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University Physics | 13th Edition | ISBN: 9780321675460 | Authors: Hugh D. Young, Roger A. Freedman

University Physics | 13th Edition

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Problem 26E

Threshold of Pain. You are investigating the report of a UFO landing in an isolated portion of New Mexico, and you encounter a strange object that is radiating sound waves uniformly in all directions. Assume that the sound comes from a point source and that you can ignore reflections. You are slowly walking toward the source. When you are 7.5 m from it, you measure its intensity to be 0.11 W/m2. An intensity of 1.0 W/m2 is often used as the “threshold of pain.” How much closer to the source can you move before the sound intensity reaches this threshold?

Step-by-Step Solution:

Solution 26E Step 1: Initial Intensity I = 0.11 W/m 2 1 Final Intensity I = 1.0 W/m 2 2 Initial Radius R =17.5 m Final Radius R = 2

Step 2 of 2

Chapter 15, Problem 26E is Solved
Textbook: University Physics
Edition: 13
Author: Hugh D. Young, Roger A. Freedman
ISBN: 9780321675460

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Threshold of Pain. You are investigating the report of a