Question: What frequency ( in Hz ) is received by a person watching an oncoming ambulance moving at 1 1 6 km / h and emitting

What frequency (in Hz) is received by a person watching an oncoming ambulance moving at 116 km/h and emitting a steady 800 Hz sound from its siren? The speed of sound on this day is 345 m/s.
Hz
(b)
What frequency (in Hz) does she receive after the ambulance has passed?
Hz

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