Physics, 06.10.2019 01:00 1910153

Atruck is traveling 70.0 kph away from you. the driver is blowing the horn, which has a frequency of 400 hz. the air temperature is 25ác. what is the observed frequency of the horn?

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Atruck is traveling 70.0 kph away from you. the driver is blowing the horn, which has a frequency of...