An ambulance is traveling north at 56.9 m/s, approaching a car that is also trav- eling north at 32 m/s. The ambulance driver hears his siren at a frequency of 696 Hz. 56.9 m/s -> 32 m/s Ambulance Car What is the wavelength at any position in front of the ambulance for the sound from the ambulance's siren? The velocity of sound in air is 343 m/s. Answer in units of m. 016 (part 2 of 2) 10.0 points At what frequency does the driver of the car hear the ambulance's siren? Answer in units of Hz