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A police car sounding a siren with a frequency of 1610 Hz is traveling at 130...

A police car sounding a siren with a frequency of 1610 Hz is traveling at 130 km/h .

What frequencies does an observer standing next to the road hear as the car approaches and as it recedes?

Express your answers using three significant figures separated by a comma.

Part B: What frequencies are heard in a car traveling at 90.0 km/h in the opposite direction before and after passing the police car?

Express your answers using three significant figures separated by a comma.

Part C: The police car passes a car traveling in the same direction at 80.0 km/h. What two frequencies are heard in this car?

Express your answers using three significant figures separated by a comma.

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