Essential University Physics: Volume 1 (4th Edition) Clone

Published by Pearson
ISBN 10: 0-134-98855-8
ISBN 13: 978-0-13498-855-9

Chapter 14 - For Thought and Discussion - Page 270: 10

Answer

The answer is below.

Work Step by Step

When the thing that is producing the wave is moving, the waves will begin to bump up against each other, so the wavelength and the frequency change. However, when just the observer is moving, the length of a given wave does not change. However, because they are moving, it appears that the frequency is higher, for they are passing through a given point on a wave more often.
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