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A Bat,flying at 6 M/s Toward a Wall,emits a Chirp

Question 67

Multiple Choice

A bat,flying at 6 m/s toward a wall,emits a chirp at 48 kHz.If the wall reflects this sound pulse,what is the frequency of the echo received by the bat? (vsound = 340 m/s)


A) 49.7 kHz
B) 48.9 kHz
C) 48.0 kHz
D) 47.2 kHz
E) ​56.7 kHz

Correct Answer:

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