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One Piano Is at Rest,and Another One Approaches at 3

Question 58

Multiple Choice

One piano is at rest,and another one approaches at 3.4 m/s.Both pianists are playing middle C (512 Hz) .What beats does the pianist at rest hear as a result of the Doppler shift? (Use 340 m/s for vsound.)


A) 10
B) 20
C) 5
D) 512
E) no beats

Correct Answer:

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