A highway patrol officer is targeting a car that is receding from her at 65m/s. the officer herself is parked. her radar gun sends out a radar wave at 34.6 GHz (1.0 GHz = 1.0x10^9 Hz).
use Vsound= c = 3.0 x 10^8 m/s.
A) what is the frequency of the radio wave returned to the radar gun?
B) what is the beat frequency of the wave generated in her gun by this signal?