Suppose that a police car on the highway is moving to the right at23 m/s, while

Question

Suppose that a police car on the highway is moving to the right at23 m/s, while a speeder is coming up from almost directly behind ata speed of 37 m/s, both speeds being with respect to the ground.The police officer aims a radar gun at the speeder. Assume that theelectromagnetic wave emitted by the radar gun has a frequency of9.00 x109 Hz. Find the difference between the frequencyof the wave that returns to the police car after reflecting fromthe speeder's car, and the original frequency emitted by the policecar.

Explanation / Answer

Observed-Source=2(source) (Vrel/C) Arrange 2(9E9)*(37-23/3E8)

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