80 o A detector initially moves at constant velocity directly toward a stationary sound source and then (after passing it) di- rectly from it. The emitted frequency is f. During the approach the detected frequency is f'ap and during the recession it is f'ec If the frequencies are related by (fapp - f'reclf = 0.500, what is the ratio Vp/v of the speed of the detector to the speed of sound?

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80 Go A detector initially moves at constant velocity directly
toward a stationary sound source and then (after passing it) di-
rectly 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'reclf = 0.500, what is the ratio
Vplv of the speed of the detector to the speed of sound?
Transcribed Image Text:80 Go A detector initially moves at constant velocity directly toward a stationary sound source and then (after passing it) di- rectly 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'reclf = 0.500, what is the ratio Vplv of the speed of the detector to the speed of sound?
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