A stationary siren produces a sound of an unknown frequency towards a jogger. The jogger, hearing a sound with a frequency of 196.5 Hz, is jogging away from the sound source at a speed of 3.00 m/s. The air temperature is 12.0 C. a) Is the frequency heard by the jogger higher or lower than the actual siren frequency? Explain briefly. (1 mark) b) What is the frequency (in Hz) of the sound produced by c) A driver in a moving car hears a frequency of 207 Hz. What is the speed (in km/hr) of the car? (5 marks) the siren? (4 marks)