Physics, 15.07.2019 22:20, morenodonaldo762

Sonar is used to determine the speed of an object. a 40.0-khz signal is sent out, and a 42.0-khz signal is returned. if the speed of sound is 345 m/s, how fast is the object moving

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Sonar is used to determine the speed of an object. a 40.0-khz signal is sent out, and a 42.0-khz sig...