Question

an ambulance is traveling north at 46.1 m/s, approaching a car that is also traveling north at 36.2 m/s. the ambulance driver hears his siren at a frequency of 575 hz. At what frequency does the driver of the car hear the ambulance's siren? The velocity of sound in air is 343 m/s. Answer in units of Hz.

Answer 1

f' = 575 Hz * (343 m/s + 36.2 m/s)/(343 m/s + 46.1 m/s)

f' = 629.9 Hz

Therefore, the frequency of the siren heard by the driver of the car is 629.9 Hz.