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July 30, 2015

Homework Help: Science- physics

Posted by Hannah on Sunday, October 23, 2011 at 5:09pm.

An aluminum bar weighs 17 pounds in air. How much force is required to lift the bar while it is immersed in gasoline? The weight of aluminum is 170 pounds/ft3 and that of gasoline is 42 pounds/ft3.

I know that the answer is 12.8 pounds but how do I get to that answer? Thanks<3

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