A police siren has a frequency of 550 Hz as the police car approaches you, 450 Hz after it has passed vou and is receding How fast are the police traveling The temperature is 20 C A police siren has a frequency of 550 Hz as the police car approaches you, 450 Hz after it has passed vou and is reced...

frequeney of sren Lshern carr app8rached f ...

A police siren has a frequency of 550 Hz as the police car approaches you, 450...

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