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a trough 9 m long, 2 m wide, 1m deep. vertical crosssection of the parallele to...

a trough 9 m long, 2 m wide, 1m deep. vertical crosssection of the parallele to end is shaped like an isoceles triangle( height 1m, base and top, of lenght 2m) the trough denity 1000kg/m^3. Find work in joules require to empty out the trough by pumping the water over the top. g=9.8

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