A train is traveling away from you at 120 kmh the train
A train is traveling away from you at 120 km/h. The train blows its400-Hz whistle. Take the speed of sound to be 340 m/s. What frequency do you hear?
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a 50kg boy runs at 100 ms crashes into a stationary box of equal mass after the collision the two move at 500 ms the
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sonar is used to determine the speed of an object a 40-khz signalis sent out and a 42-khz signal is returned assume the
a train is traveling away from you at 120 kmh the train blows its400-hz whistle take the speed of sound to be 340 ms
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a 800 kg metal ball hits a wall at 10 ms at an angle of 600 with the plane of the wall it bounce off the wal with the
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a 55kg swimmer is standing on a stationary 210kg oating raftthe swimmer then runs off the raft horizontally with a
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