Question 1. You are traveling 120 km/h in your new black Mitsubishi ASX. A nearby policeman using his hand held X-Band (frequency = 10 GHz) speed radar transmits a CW signal from his radar which then detects the Doppler shift of the echo from your car. Assume that you are speeding directly towards his radar at an angle of 30°. a. How many Hz is the frequency of the received signal shifted by the Doppler effect? (10 marks) b. What is the received frequency at the radar? (5 marks)