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The police car with its 300-Hz siren is moving away from the warehouse at a speed of 19.0 m/s .
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The police car with its 300-Hz siren is moving away from the warehouse at a speed of 19.0 m/s .

User Kirill Feoktistov
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Frequency with wavelength 1.162m = 344/1.162 = 296.04Hz
User Dampsquid
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