Let the speed of the sound be vw
Speed of the source be vs
The frequency received by the person as the ambulance approaches is expressed as:
Converting 115 km/h
Suppose an oncoming ambulance moving at 115 km/h emits a steady 785-Hz sound from its siren.
What frequency, in Hz, is received by a person watching the oncoming ambulance? The speed of sound on this day is 345 m/s
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