## Conceptual Physics (12th Edition)

Published by Addison-Wesley

# Chapter 21 - Think and Explain: 65

440 Hz. 660 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 $2 f_{o} = (2)(220 Hz) = 440 Hz$. The third harmonic is at three times the fundamental frequency, or $3 f_{o} = (3)(220 Hz) = 660 Hz$. The fourth harmonic is at four times the fundamental frequency, or $4 f_{o}$, and so on.

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.