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Assume that atmospheric air has a density of 1.2 kg m-3. 15. A spherical balloon of radius 0.15 m and mass 0.014 kg is

Assume that atmospheric air has a density of 1.2 kg m-3. 15. A spherical balloon of radius 0.15 m and mass 0.014 kg is filled with a gas. The balloon floats in air in the state of neutral buoyancy. Determine the density of the gas in the balloon.

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