Problems: Doppler

IB Physics: Problems: Doppler

1. A police radar trap uses a frequency of 10GHz to measure the velocity of a speeding car (speed limit 100kmhr-1). If the shift in frequency is 2000Hz, calculate the speed of the car.A second car travelling in an outside lane at the same speed (as shown) also gets measured by the police but does not get charged. Suggest why and calculate the measured speed?2. A child is screaming at a constant frequency of 3000Hz whilst...


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