Essential University Physics: Volume 1 (4th Edition) Clone

Published by Pearson
ISBN 10: 0-134-98855-8
ISBN 13: 978-0-13498-855-9

Chapter 14 - Exercises and Problems - Page 272: 66

Answer

The answer is below.

Work Step by Step

a) Since the intensity is inversely related to the square of the distance, it follows that if the distance is doubled, the intensity is 1/4 as much. b) We use the equation for the decibel level: $ \beta = 10log{(1/4)}\\ \beta = -6 $ Thus, the decibel level is decreased by 6 decibels.
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