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Posted by on Monday, December 15, 2008 at 3:45pm.

A student librarian picks up a 2.2 kg book from the floor to a height of 1.10 m. He carries the book 7.9 m to the stacks and places the book on a shelf that is 0.35 m above the floor. How much work does he do on the book?

  • Physics - , Monday, December 15, 2008 at 4:02pm


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