Question:
A train moving towards a tunnel in a huge mountain with a
Last updated: 6/27/2023
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A train moving towards a tunnel in a huge mountain with a speed of 12 m s sounds its whistle If the driver hears 6 beats per second speed of sound in air is 332 m s the frequency of the whistle is 1 80 Hz 2 120 Hz 3 160 Hz 4 240 Hz