Physics: Principles with Applications (7th Edition)

Published by Pearson
ISBN 10: 0-32162-592-7
ISBN 13: 978-0-32162-592-2

Chapter 12 - Sound - General Problems - Page 357: 91

Answer

0.001 of the sound intensity passes through the door.

Work Step by Step

A sound level decrease of 10 dB means that the intensity decreases by a factor of 10, so a sound level decrease of 30 dB means that the intensity falls by a factor of (10)(10)(10).
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