A highway patrolman sends a 28.250-GHz radar beam toward a speeding car. The reflected wave is lower

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A highway patrolman sends a 28.250-GHz radar beam toward a speeding car. The reflected wave is lower in frequency by 2.97 kHz.
(a) Is the car moving toward or away from the radar gun? Explain.
(b) What is the speed of the car?
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Physics

ISBN: 978-0321976444

5th edition

Authors: James S. Walker

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