An Ambulance Is Generating a Siren Sound at a Frequency

question 77

Multiple Choice

An ambulance is generating a siren sound at a frequency of 2,400 Hz.The velocity of sound is 345.0 m/s.The observer is traveling at a velocity of 24.00 m/s toward the ambulance and the ambulance is traveling at a velocity of 20.00 m/s toward the observer.What is the frequency of the siren perceived by the observer?

• A) 2,489 Hz
• B) 2,560 Hz
• C) 2,675 Hz
• D) 2,725 Hz
• E) 2,830 Hz

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