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July 6, 2015

Homework Help: science

Posted by Anonymous on Wednesday, May 4, 2011 at 2:03am.

a crane does 62,500. J of work lifting a 120.-N backpack?
a. How high did you lift the backpack?
b. How much did the backpack weigh in pounds? (Hint: There are 4.448 N in one pound.)

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