A Factory Siren Indicating the End of a Shift Has

question 73

Short Answer

A factory siren indicating the end of a shift has a frequency of 90.0 Hz.
(a) What frequency is perceived by the occupant of a car traveling towards the factory at 25 m/s?
(b) What frequency is perceived by the occupant of a car traveling away from the factory at 30 m/s?

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