An Ambulance Is Generating a Siren Sound at a Frequency

question 38

Multiple Choice

An ambulance is generating a siren sound at a frequency of 2,000 Hz.The velocity 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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