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erica [24]
4 years ago
10

An opera singer in a convertible sings a note at 700 hz while cruising down the highway at 83 km/h . the speed of sound in the a

ir is 343 m/s. part a what is the frequency heard by a person standing beside the road in front of the car?

Physics
1 answer:
ladessa [460]4 years ago
4 0

In meters per second, the singer is traveling ...

... 83 km/h × (1 h)/(3600 s) × (1000 m)/(1 km) ≈ 23 1/18 m/s

Then the observed frequency is ...

... f' = 343/(343 -23.056)·700 Hz ≈ 750.4 Hz

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