Physics, 11.12.2019 03:31, yungnoaweo4209

Aperson standing close to a railroad crossing hears the whistle of an approaching train. he notes that the pitch of the whistle drops as the train passes by and moves away from the crossing. the frequency of the approaching whistle is 516 hz, and drops to 494 hz after the train is well past the crossing. what is the speed of the train?

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Aperson standing close to a railroad crossing hears the whistle of an approaching train. he notes th...