Physics: Principles with Applications (7th Edition)

Published by Pearson
ISBN 10: 0-32162-592-7
ISBN 13: 978-0-32162-592-2

Chapter 12 - Sound - Questions: 17

Answer

The child hears the highest frequency at position C.

Work Step by Step

At that position, the child is swinging forward. Assuming the swing acts like a pendulum, the child reaches the highest speed there because it is the lowest point. This large relative motion between the source and detector results in the greatest frequency shift.
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