A police siren has a frequency of 550 hz as the police car


A police siren has a frequency of 550 Hz as the police car approaches you and a frequency of 450 Hz after it has passed you and receding. The speed of sound is 343 m/s.

How fast are the police traveling?

Identify the cause for the frequency shift in each case.

What is the true frequency of the police siren.

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Physics: A police siren has a frequency of 550 hz as the police car
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