The siren on a police car emits waves with a frequency f = 500 Hz. You are standing by the side of the road when a police car, sounding its siren, approaches you at 30.0 m/s. What frequency do you hear? The speed of sound is 340 m/s.
A) 544 Hz
B) 540 Hz
C) 548 Hz
D) 532 Hz
E) 536 Hz
Correct Answer:
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