A woman is sitting at a bus stop when an ambulance with a siren wailing at 415 Hz approaches at 28.0 m/s (about 63 mph). Assume the speed of sound to be 343 m/s.
What frequency (in Hz) does the woman hear?
fa =
Here,
f0 = 415 Hz
for the frequency heard
frequency heard = f0 * v/(v - vs)
frequency heard = 415 * 343/(343 - 28)
frequency heard = 451.9 Hz
the frequency heard by the woman is 451.9 Hz
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