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20-05-2020
Physics

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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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CXS2003 CXS2003

22-05-2020

Answer:

The answer is 4.55 m/s!

Explanation:

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