An Ambulance Is Generating a Siren Sound at a Frequency

An ambulance is generating a siren sound at a frequency of 2,000 Hz. The speed of sound is 345.0 m/s. The observer and the ambulance are traveling toward each other at a velocity of 24.00 m/s. If the observer is stationary, what is the frequency of the siren perceived by the observer?

A) 2,032 Hz
B) 2,150 Hz
C) 2,220 Hz
D) 2,575 Hz
E) 2,750 Hz

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