Physics

Physics, 13.07.2019 09:20, animelover730

Alice and jim calculate that they must do 1,800 j of work to push a piano up a ramp. however, because they must also overcome friction they actually must do 2,400 j of work. what is the efficiency of the map

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Alice and jim calculate that they must do 1,800 j of work to push a piano up a ramp. however, becaus...

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