What frequency of sound will the passengers in the passenger car hear from the police cars siren as the police car approaches the passenger car?

1. (25 points) A police car is traveling 35 m/s while speeding toward a passenger car traveling at a speed of 20 m/s as shown below. The police car eventually passes the passenger car while sounding a siren with a frequency of 500 Hz. The air temperature is 20.0'C. V = 35 m/s v = 35 m/s POLICE . POLICE V = 20 m/s