A police car is traveling east at 39.5 m/s along a straight road, overtaking a car ahead of it moving east at 32.0 m/s. The police car has a malfunctioning siren that is stuck at 910 Hz.
a) What is the wavelength in front of the police car?
________ m
b) What is the wavelength behind the police car?
_________m
c) What is the frequency heard by the driver being chased?
_________kHz