Conceptual Physics (12th Edition)

Published by Addison-Wesley
ISBN 10: 0321909100
ISBN 13: 978-0-32190-910-7

Chapter 21 - Think and Explain - Page 402-403: 66

Answer

880 Hz. 1320 Hz.

Work Step by Step

As seen on page 395 and in Figure 21.5, the second harmonic is at two times the fundamental frequency, or $2 f_{o} = (2)(440 Hz) = 880 Hz$. The third harmonic is at three times the fundamental frequency, or $3 f_{o} = (3)(440 Hz) = 1320 Hz$. The fourth harmonic is at four times the fundamental frequency, or $4 f_{o}$, and so on.
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