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April 20, 2014

Homework Help: Physics

Posted by mymi on Monday, November 7, 2011 at 3:34am.

A 1.8-g balloon is filled with helium gas. When a mass of 4.8 g is attached to the balloon, the combined mass hangs in static equilibrium in midair. Assuming that the balloon is spherical, what is its diameter? (The density of helium is 0.179 kg/m3, and the density of air is 1.3 kg/m3.)

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