Conceptual Physics (12th Edition)

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

Chapter 20 - Reading Check Questions (Comprehension): 27

Answer

The two sounds waves are exactly out of phase, and will superimpose and cancel each other out. The result is no sound.

Work Step by Step

This is discussed on pages 384-385, and shown in Figure 20.17d.
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