Two workers unload a 100 kg bed frame from a truck whose bed is 1.04 m above the ground. They carry it
up 5 flights of stairs (each flight is 2.5 m tall) to Larry's apartment. When they get there, Larry tells them that
he never ordered a bed frame. After some confusion and heated words, the workers take the bed frame
back down the stairs and put it back on the truck.
Calculate the net work done by the workers on the bed in this process. Report you answer to the nearest kJ.
Answers: 1
Physics, 21.06.2019 15:00
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The coefficient of friction is a number that represents the resistance to sliding between two in contact with one another.
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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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Two workers unload a 100 kg bed frame from a truck whose bed is 1.04 m above the ground. They carry...
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