Conceptual Physics (12th Edition)

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

Chapter 20 - Think and Solve - Page 389: 39

Answer

2 Hz, 3 Hz, and 5 Hz.

Work Step by Step

The beat frequencies are equal to the differences in the tuning fork frequencies. With this particular set of tuning forks, there are 3 possible differences and 3 possible beat frequencies. 261 Hz - 259 Hz = 2 Hz 259 Hz - 256 Hz = 3 Hz 261 Hz - 256 Hz = 5 Hz This is discussed on pages 385-386.
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