(a) What frequency is received by a person watching an oncoming ambulance moving at 110 km/h and...
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(a) What frequency is received by a person watching an oncoming ambulance moving at 110 km/h and emitting a steady 800-Hz sound from its siren? The speed of sound on this day is 345 m/s.
(b) What frequency does she receive after the ambulance has passed?
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