A Bat,flying at 3

question 40

Multiple Choice

A bat,flying at 3.00 m/s toward a wall,emits a chirp at 50.0 kHz.If the wall reflects this sound pulse,what is the frequency of the echo received by the bat? (v_sound = 340 m/s)

• A) 51.5 kHz
• B) 51.2 kHz
• C) 40.8 kHz
• D) 50.9 kHz

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