vperez5839 vperez5839

26-04-2024
Physics

contestada

One day when the speed of sound in air is 343 m/s, a fire truck traveling at vs = 27 m/s has a siren which produces a frequency of fs = 411 Hz. What is the apparent frequency of the siren heard by a person standing on the side of the road?
1) 411 Hz
2) 422 Hz
3) 400 Hz
4) 433 Hz

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