A car with the windows rolled down is traveling north on a road at a speed of 21.0 m/s. A fire truck, traveling south at a speed of 45.0 m/s, approaches with its siren producing sound at a frequency of 2600 Hz. (Enter your answers in Hz. Assume that the speed of sound in air is 343 m/s.) (a) What frequency does the driver of the car observe as the fire truck approaches? (Enter your answer to the nearest integer.) Hz (b) What frequency does the driver of the car detect after the fire truck passes her? (c) Repeat parts (a) and (b) for the case when the fire truck traveling northbound. while fire truck overtakes after fire truck passes ΤΗΣ

A car with the windows rolled down is traveling north on a road at a speed of 21.0 m/s. A fire truck, traveling south at a speed of 45.0 m/s, approaches with its siren producing sound at a frequency of 2600 Hz. (Enter your answers in Hz. Assume that the speed of sound in air is 343 m/s.) (a) What frequency does the driver of the car observe as the fire truck approaches? (Enter your answer to the nearest integer.) Hz (b) What frequency does the driver of the car detect after the fire truck passes her? (c) Repeat parts (a) and (b) for the case when the fire truck traveling northbound. while fire truck overtakes after fire truck passes ΤΗΣ