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You stand on the platform at a train station and listen to the train approaching the station at a constant velocity. While the train approaches, but before it arrives, what do you hear?

Question

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You stand on the platform at a train station and listen to the train approaching the station at a constant velocity. While the train approaches, but before it arrives, what do you hear?

Accepted Answer

(e) The intensity increasing and the frequency remaining the same

Answer

(c)The intensity increasing and the frequency decreasing

Answer

(f) The intensity decreasing and the frequency remaining the same.

Answer

(a) The intensity and the frequency of the sound both increasing

Answer

(d) The intensity decreasing and the frequency increasing

Answer

(b) The intensity and the frequency of the sound both decreasing

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