University Physics with Modern Physics (14th Edition)

by Young, Hugh D.; Freedman, Roger A.

Published by Pearson

ISBN 10: 0321973615

ISBN 13: 978-0-32197-361-0

Chapter 35 - Interference - Problems - Exercises - Page 1185: 35.57

Answer

Choice D.

Work Step by Step

Interference occurs when multiple waves combine. If all of the students now hear the tone, no interference is occurring. There is only one wave. As expected, turning off one of the speakers decreased the loudness of the sound.

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