An Ambulance Is Generating a Siren Sound at a Frequency

An ambulance is generating a siren sound at a frequency of 2,400 Hz. The speed of sound is 345.0 m/s. If the observer is traveling at a velocity of 24.00 m/s toward the stationary ambulance, then what is the frequency of the siren perceived by the observer?

A) 2,640 Hz
B) 2,567 Hz
C) 2,520 Hz
D) 2,508 Hz
E) 2,475 Hz

Correct Answer:

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