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Ten cars in a circle at a boom box competition produce a

College Physics by Urone | 1st Edition | ISBN: 9781938168000 | Authors: Paul Peter Urone

Problem 23PE Chapter 17

College Physics by Urone | 1st Edition

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College Physics by Urone | 1st Edition | ISBN: 9781938168000 | Authors: Paul Peter Urone

College Physics by Urone | 1st Edition

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Problem 23PE

Ten cars in a circle at a boom box competition produce a 120-dB sound intensity level at the center of the circle. What is the average sound intensity level produced there by each stereo, assuming interference effects can be neglected?

Step-by-Step Solution:
Step 1 of 3

Solution 23PE

If a source is emitting sound of some intensity then n number of sources emitting sound of same intensity will definitely cause increase in sound intensity and intensity emitted by  identical sources will be times of the single source if interference is not considered.

The expression to find the intensity level of sound produced by 10 cars  is,

= (10 d)

Substitute, 120 dB for and  for  in the expression of intensity level of sound,

120 dB = (10 dB) ()

=  ()

Further solve,

 

= 1 w/

Hence the intensity of sound for stereo of 10 cars is  1 w/.

The expression to find the intensity of 10 stereo is,

=...

Step 2 of 3

Chapter 17, Problem 23PE is Solved
Step 3 of 3

Textbook: College Physics by Urone
Edition: 1st
Author: Paul Peter Urone
ISBN: 9781938168000

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