Essential University Physics: Volume 1 (3rd Edition)

Published by Pearson
ISBN 10: 0321993721
ISBN 13: 978-0-32199-372-4

Chapter 14 - Section 14.3 - Waves on a String - Got It?: 14.3

Answer

c)

Work Step by Step

Intensity is given by $P/(4 \pi r^2)$. Thus, if r is 10 times as much, intensity will be 1/100 (which is 1%) as much. The answer is c.
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