Fundamentals of Physics Extended (10th Edition)

Published by Wiley
ISBN 10: 1-11823-072-8
ISBN 13: 978-1-11823-072-5

Chapter 17 - Waves-II - Questions - Page 505: 7

Answer

We can rank the detectors according to the frequency of the sound they detect from the source: $1 \gt 4 \gt 3 \gt 2$

Work Step by Step

The source moves directly toward detector 1, so detector 1 will detect the highest frequency. The source moves directly away from detector 2, so detector 2 will detect the lowest frequency. The source moves parallel detector 3, so detector 3 will detect the original frequency. A component of the source's motion is directed toward detector 4, so detector 4 will detect a higher frequency than the original frequency, but a lower frequency than the frequency detected by detector 1. We can rank the detectors according to the frequency of the sound they detect from the source: $1 \gt 4 \gt 3 \gt 2$
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