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# Energy Output. By measurement you determine that sound

ISBN: 9780321675460 31

## Solution for problem 27E Chapter 15

University Physics | 13th Edition

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University Physics | 13th Edition

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Problem 27E

Energy Output. By measurement you determine that sound waves are spreading out equally in all directions from a point source and that the intensity is 0.026 W/m2 at a distance of 4.3 m from the source. (a) What is the intensity at a distance of 3.1 m from the source? (b) How much sound energy does the source emit in one hour if its power output remains constant?

Step-by-Step Solution:

Solution 27E Step 1: Power related to intensity at distance r is given by P = I(4r )2 Energy is power times time. 2 Apply (r /1 )2= I /I1 2 Step 2: (a).The intensity at a distance of 3.1 m from the source is I r 2 = I r 2 1 1 2 2 2 I2= (r 2r )1I 1 I = (0.026 W/m )(4.3 m /3.1 m) 2 2 2 I2= 0.050 W/m

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##### ISBN: 9780321675460

The full step-by-step solution to problem: 27E from chapter: 15 was answered by , our top Physics solution expert on 05/06/17, 06:07PM. The answer to “Energy Output. By measurement you determine that sound waves are spreading out equally in all directions from a point source and that the intensity is 0.026 W/m2 at a distance of 4.3 m from the source. (a) What is the intensity at a distance of 3.1 m from the source? (b) How much sound energy does the source emit in one hour if its power output remains constant?” is broken down into a number of easy to follow steps, and 68 words. University Physics was written by and is associated to the ISBN: 9780321675460. Since the solution to 27E from 15 chapter was answered, more than 282 students have viewed the full step-by-step answer. This textbook survival guide was created for the textbook: University Physics, edition: 13. This full solution covers the following key subjects: source, output, Sound, distance, Intensity. This expansive textbook survival guide covers 26 chapters, and 2929 solutions.

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