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Solution: An ambulance is traveling North at 54.3 m/s, approaching a c...

Question

An ambulance is traveling North at 54.3 m/s, approaching a car that is also traveling North at 33.6 m/s. The ambulance driver hears his siren at a frequency of 678 cycles/s. The velocity of sound is 343 m/s. At what frequency does the driver of the car hear the ambulance's siren?