While standing at a crosswalk you hear a frequency of540 hz
While standing at a crosswalk, you hear a frequency of540 Hz from an approaching police car.After the police car passes, its frequency is 480 Hz. What is the velocity of the police car?(speed of sound in air = 343 m/s)
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while standing at a crosswalk you hear a frequency of540 hz from an approaching police carafter the police car passes
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