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A police car with a siren of 300 Hz. is moving toward a warehouse at 30...

A police car with a siren of 300 Hz. is moving toward a warehouse at 30 m/s. What frequency does the driver hear reflected from the warehouse? The speed of sound is 343 m/s.

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Answer #1

Find the frequency received by the warehouse and then use that frequency as source frequency for the driver where driver is the observer to find the required solution as shown below

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