Answer
When the 1134 Hz tuning fork is sounded and you hear three beats per second, you don't know what the frequency of the piano string is. It might be either 1131 or 1137 Hz.
Work Step by Step
This is discussed on pages 385-386.
Conceptual Physics (12th Edition)
by Hewitt, Paul G.
Published by
Addison-Wesley
ISBN 10:
0321909100
ISBN 13:
978-0-32190-910-7
Part 4 - Multiple-Choice Practice Exam - Page 404: 27
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