Physics, 21.05.2020 22:04 lovvyDovvy04

A stationary speed gun emits a microwave beam at 2.10x10^10 Hz. It reflects off a car and returns 638 Hz lower. What is the speed of the car? (Unit=m/s)

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A stationary speed gun emits a microwave beam at 2.10x10^10 Hz. It reflects off a car and returns 63...

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