Question

A motorist is targeted by police radar when approaching a traffic control post. The radar emits at the frequency f=2.5 x 109 Hz and receives the reflected wave at a frequency of 250 Hz higher. Calculate the speed of the car.

Determine the expression of the wave equations for the electric and magnetic fields emitted by the radar. The average intensity is 40 W/m2. The wave propagates in the direction of Y>0. The electric field of the wave is maximum at the position x=y=z=0 and makes a 30 degree angle clockwise from X+ to Z+.

You must express the amplitude of the electric and magnetic fields as a vector component according to the unit vectors i, j, k.

Answer 1

I have solved your problem which is shown below:

By using doppler effect for relativistic and using Averge Intensity relation I calculate the values of electric and magnetic field and their direction.

In case you have any query please write in a comment. I hope you like it. Thank you.

I hope you like it. Thank you