A spherical balloon filled with H₂ gas to a volume of 3.35x10⁻² m³ at 17 °C is carefully lowered into the sea to a depth of 50 m, where the seawater temperature is about 12 °C. Assume the gas is always in thermal equilibrium with the surrounding seawater. The atmospheric pressure at the surface is Po = 1.013 x 10⁵ N/m² and the specific gravity of the seawater is 1.03. [Answer in 3 significant figures]a) What is the gauge pressure 50 m below the sea surface?b) What is the radius of the balloon at 50 m below the sea surface?c) What is the buoyant force of the balloon at 50 m below the sea surface?d) What is the change in thermal energy of the gas from surface to 50 m below? (including correct sign)
A spherical balloon filled with H₂ gas to a volume of 3.35x10⁻² m³ at 17 °C is carefully lowered into the sea to a depth of 50 m, where the seawater temperature is about 12 °C. Assume the gas is always in thermal equilibrium with the surrounding seawater. The atmospheric pressure at the surface is Po = 1.013 x 10⁵ N/m² and the specific gravity of the seawater is 1.03. [Answer in 3 significant figures]a) What is the gauge pressure 50 m below the sea surface?b) What is the radius of the balloon at 50 m below the sea surface?c) What is the buoyant force of the balloon at 50 m below the sea surface?d) What is the change in thermal energy of the gas from surface to 50 m below? (including correct sign)
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