A police car is moving at 44.5 m/s to catch up with a speeder directly ahead. The speed limit is 29.1 m/s. A police car radar “clocks” the speed of the other car by emitting microwaves with frequency 3.30 × 1010 Hz and observing the frequency of the reflected wave. The reflected wave, when combined with the outgoing wave, produces beats at a rate of 1400 s−1. If the speeder is going faster than the police car, how fast would it have to go so that the reflected microwaves produce the same number of beats per second
A police car is moving at 44.5 m/s to catch up with a speeder directly ahead. The speed limit is 29.1 m/s. A police car radar “clocks” the speed of the other car by emitting microwaves with frequency 3.30 × 1010 Hz and observing the frequency of the reflected wave. The reflected wave, when combined with the outgoing wave, produces beats at a rate of 1400 s−1. If the speeder is going faster than the police car, how fast would it have to go so that the reflected microwaves produce the same number of beats per second?
Given that:
The speed of police car, vp= 44.5 m/s
Speed limit = 29.1 m/s
frequency of microwave emmiting by car, f = 3.3 X 1010 Hz
The beat frequency = 1400 s-1
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