Answer
10 octaves.
Work Step by Step
Going up 1 octave means doubling the frequency. Find the number of octaves, n, between the 2 frequencies.
$$20000 Hz = 2^n(20Hz)$$
$$1000=2^n$$
$$n=\frac{log1000}{log2}=9.97\approx 10$$
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 355: 25
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