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6 Oct 2020
How many cubic meters of helium are required to lift a light balloon with a 400-kg payload to a height of 8,000 m? Take ρHe = 0.179 kg/m3. Assume the balloon maintains a constant volume and the density of air decreases with the altitude z according to the expression ρair = ρ0e-z/8 000, where z is in meters and ρ0 = 1.20 kg/m3 is the density of air at sea level.
How many cubic meters of helium are required to lift a light balloon with a 400-kg payload to a height of 8,000 m? Take ρHe = 0.179 kg/m3. Assume the balloon maintains a constant volume and the density of air decreases with the altitude z according to the expression ρair = ρ0e-z/8 000, where z is in meters and ρ0 = 1.20 kg/m3 is the density of air at sea level.
James SamasLv8
24 Nov 2020
