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A train moving at a speed of 220 ms towards a 31 fareft feere areg...

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Physics

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A train moving at a speed of 220 ms towards a 31 fareft feere areg oft 3220 ms7 1000 Hz stationary object emits a sound of frequency 1000Hz Some of the sound reaching the object gets reflected back to the train as echo The frequency of the echo as detected by the driver of the train is speed of sound in air is 330 ms 2 3000 Hz 4 4000 Hz 1 5000 Hz 3 3500 Hz 4 zahllont af at a fe af gift vaffany 1 5000 Hz 3 3500 Hz 330 ms 2 3000 Hz 4 4000 Hz

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