A train traveling at 25 m/s is blowing its whistle at 440 Hz as it crosses a level crossing. You are waiting at the crossing and hear the pitch of the whistle change as the train passes you. The sound you hear changes from a frequency of to a frequency of _ _(Take the speed of sound to be 340 m/s.)
a. 410 Hz, 475 Hz
b. 472 Hz, 408 Hz
c. 408 Hz, 472 Hz
d. 475 Hz, 410 Hz
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A train traveling at 25 m/s is blowing its whistle at 440 Hz as it crosses a level crossing. You are...
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