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A trough is 5 feet long and 1 foot high. The vertical cross-section of the trough parallel to an end is shaped like the graph

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A trough is 5 feet long and 1 foot high. The vertical cross-section of the trough parallel to an end is shaped like the graph of y x from I -1 to x : 1 . The trough is full of water. Find the amount of work in foot-pounds required to empty the trough by pumping the water over the top. Note: The weight of water is 62 pounds per cubic foot

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