A car alarm is emitting sound waves of frequency 510Hz . You are on a motorcycle

Question

A car alarm is emitting sound waves of frequency 510Hz . You are on a motorcycle, traveling directly away from the car.

Part A

How fast must you be traveling if you detect a frequency of 488Hz ? Take the speed of sound to be 344 m/s.

Enter your answer as a positive number.

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A car alarm is emitting sound waves of frequency 510Hz . You are on a motorcycle, traveling directly away from the car.

Part A

How fast must you be traveling if you detect a frequency of 488Hz ? Take the speed of sound to be 344 m/s.

Enter your answer as a positive number.

SubmitMy AnswersGive Up

Explanation / Answer

f' = f(c - v)/c

v = c - (f'/f)c = 344 - (488/510)344= 14.83

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