A detector initially moves at constant velocity directly toward a stationary sound
Chapter 17, Problem 80(choose chapter or problem)
A detector initially moves at constant velocity directly toward a stationary sound source and then (after passing it) directly from it. The emitted frequency is f. During the approach the detected frequency is f app and during the recession it is f rec. If the frequencies are related by (f app f rec)/f 0.500, what is the ratio vD/v of the speed of the detector to the speed of sound?
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