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 - Problems - Page 354: 23

Answer

$\approx 80 Hz-20000 Hz$.

Work Step by Step

See figure 12–6. At a sound level of 40 dB, the low-frequency threshold of hearing is $\approx 80 Hz$. The “threshold of hearing” curve does not reach the 40-dB sound level on the right side of the chart. Assume that the highest frequency a human can hear, about 20000 Hz, can be heard at a sound level of 40 dB. Your answers may vary.
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