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Physics, 09.08.2019 23:10 kingdevin16

Two cars have identical horns, each emitting a frequency of fs = 395 hz. one of the cars is moving with a speed of 12.0 m/s toward a bystander waiting at a corner, and the other car is parked. the speed of sound is 343 m/s. what is the beat frequency heard by the bystander?

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