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July 25, 2014

Homework Help: Physics

Posted by MJ on Friday, January 22, 2010 at 11:24pm.

I need help with these three questions, thanks

1)The man lifts a box that weght 185N. The box is lifted 0.80m. How much work does the man do on the box?


2) 0.180kg ball falls 2.5m How much work does the force of gravity do on the ball?
a)44J b) .45J c) 1.76J
d)4.4J e) None of these

3) Which of the following gives the temperature to the nearest tenth of a degree.
a) 67.43 b)67 c) 6.743x10^1
d) 67.4 e) None of these

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