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While Standing at a Crosswalk,you Hear a Frequency of 600

Question 45

Multiple Choice

While standing at a crosswalk,you hear a frequency of 600 Hz from an approaching police car.After the police car passes,its frequency is 400 Hz.What is the speed of the police car? (speed of sound = 340 m/s)


A) 34.0 m/s
B) 60.0 m/s
C) 66.3 m/s
D) 68.0 m/s
E) 199 m/s

Correct Answer:

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