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April 19, 2014

Homework Help: physic

Posted by roxy on Thursday, October 22, 2009 at 12:51pm.

An object of mass 1.5 kg rests on a shelf where it has a gravitational potential energy of 7 joules. An object of mass 4.5 kg is placed on the same shelf. What is the gravitational potential energy of this second object?

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