An Ambulance Is Generating a Siren Sound at a Frequency

question 9

Multiple Choice

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 ambulance is traveling at a velocity of 24.00 m/s toward the stationary observer, then what is the frequency of the siren perceived by the observer?

• A) 2,579 Hz
• B) 2,540 Hz
• C) 2,525 Hz
• D) 2,500 Hz
• E) 2,480 Hz

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