An ambulance is traveling east at 55.6 m/s. Behind it there is a car traveling along the same direction at 34.5 m/s. The ambulance driver hears his siren at a frequency of 888 Hz.
A) What is the wavelength of the sound of the ambulance's siren if you are standing at the position of the car? The velocity of sound in air is 343 m/s .
B) At what frequency does the driver of the car hear the ambulance's siren?