A truck driver hears the siren of a stopped police car at 950 HzHz . The...
A truck driver hears the siren of a stopped police car at 950 HzHz . The truck travels towards the car at a speed of 35.0 m/sm/s .
Speed of the sound in air = 343 m/s
Part A
Calculate the frequency of the police siren.
Express your answer using three significant figures.
Part B
Then the police stopped the truck driver to check his vehicle. After checking the truck the police car travels away while the truck at rest. What is the speed of the car if the frequency heard by the truck driver is 845 HzHz .
Express your answer using three significant figures.
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A truck driver hears the siren of a stopped police car at 950
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