Police radar determines the speed of motor vehicles using the same Doppler-shift technique employed for ultrasound in
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Police radar determines the speed of motor vehicles using the same Doppler-shift technique employed for ultrasound in medical diagnostics. Beats are produced by mixing the double Doppler- shifted echo with the original frequency. If 1.50x 109 -Hz microwaves are used and a beat frequency of 150 Hz is produced, what is the speed of the vehicle?
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The Doppler effect is a phenomenon in which the frequency of a wave changes as the source of the wav...View the full answer
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