A driver approaches a stationary 440 Hz siren at 25 m/s. What is the frequency h
ID: 2094332 • Letter: A
Question
A driver approaches a stationary 440 Hz siren at 25 m/s. What is the frequency heard by the driver? The speed of sound in air is 343 m/s.472 Hz 408 Hz 431 Hz 412 Hz 440 Hz A driver approaches a stationary 440 Hz siren at 25 m/s. What is the frequency heard by the driver? The speed of sound in air is 343 m/s.
472 Hz 408 Hz 431 Hz 412 Hz 440 Hz A driver approaches a stationary 440 Hz siren at 25 m/s. What is the frequency heard by the driver? The speed of sound in air is 343 m/s.
472 Hz 408 Hz 431 Hz 412 Hz 440 Hz
Explanation / Answer
fd = f0 (v +v0)/v + vs
fd = 472 HZ
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