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A driver travels northbound on a highway at a speed of 24.0 m/s. A police car,...

A driver travels northbound on a highway at a speed of 24.0 m/s. A police car, traveling southbound at a speed of 31.0 m/s, approaches with its siren producing sound at a frequency of 2400 Hz.

(a) What frequency does the driver observe as the police car approaches? Hz

(b) What frequency does the driver detect after the police car passes him? Hz

(c) Repeat parts (a) and (b) for the case when the police car is traveling northbound.

while police car overtakes Hz ?

after police car passes?

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