A police radar gun works by reflecting radar waves off approaching cars. The gun sends out a
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A police radar gun works by reflecting radar waves off approaching cars. The gun sends out a microwave signal, and then measures the beat frequency between the outgoing wave and the incoming reflected wave. A particular type gun sends out a signal with a wavelength of 7.7mm. If it measures a beat frequency of 5.71kHz, what is the speed of the approaching car?
Related Book For
Physics
ISBN: 9781119539636
11th Edition
Authors: John D. Cutnell, Kenneth W. Johnson, David Young, Shane Stadler
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