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A thin bag full of air has volume of 1.29E-3 m^3. It has a total mass...

A thin bag full of air has volume of 1.29E-3 m^3. It has a total mass of 2 g. The density of air is 1.275 kg/m^3 and the density of water is 1000 kg/m^3. What is the buoyant force of the water on the bag, in Newtons, if the bag is held so its entire volume is under water? The correct answer is 12.6

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