Answer
$\approx 20 dB$
Work Step by Step
See figure 12–6.
A 100-Hz tone at a sound level of 50 dB has a loudness level of about 20 phons.
A 5000-Hz tone on the 20-phon curve corresponds to a sound level of $\approx 20 dB$.
Physics: Principles with Applications (7th Edition)
by Giancoli, Douglas C.
Published by
Pearson
ISBN 10:
0-32162-592-7
ISBN 13:
978-0-32162-592-2
Chapter 12 - Sound - Problems - Page 354: 22
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