A commuter train passes a passenger platform at a, Physics

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A commuter train passes a passenger platform at a

A commuter train passes a passenger platform at a constantspeed of 45.0 m/s. The train horn issounded at its characteristic frequency of 320 Hz.

(a) What overall change in frequency isdetected by a person on the platform as the train moves fromapproaching to receding?

(b) What wavelength is detected by a person on the platform as thetrain approaches?

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Physics: A commuter train passes a passenger platform at a

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