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Physics, 27.06.2019 19:00 MIYAISSAVGE2409
At an auto race, a member of the pit crew stands beside the track. a car approaches him at 100 m/s and emits a sound at frequency 1100hz. the air is still and the speed of sound is 340mls. what frequency will the pit crew member hear? a.1560hz b.1420hz c.1640hz d.850hz
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Afisherman notices that his boat is moving up and down periodically without any horizontal motion, owing to waves on the surface of the water. it takes a time of 2.20 s for the boat to travel from its highest point to its lowest, a total distance of 0.670 m . the fisherman sees that the wave crests are spaced a horizontal distance of 5.80 m apart. (a) how much is the wavelength? (b) find the period of the wave. (c) how fast are the waves traveling? (d) what is the amplitude a of each wave?
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At an auto race, a member of the pit crew stands beside the track. a car approaches him at 100 m/s a...
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