A balloon weighing 3 5 lbf is 6 ft in diameter If filled with hydrogen at 18 psia and 60 deg F and released, at what U S standard altitude will it be neutral D 6 ft W 3 5 lbf Hydrogen, 18 psi 60F LT

Question: A balloon weighing 3.5 lbf is 6 ft in diameter. If filled with hydrogen at 18 psia and 60°F and released, at what U.S. standard

A balloon weighing 3.5 lbf is 6 ft in diameter. If filled with hydrogen at 18 psia and 60°F and released, at what U.S. standard altitude will it be neutral?

D-6 ft W 3.5 lbf Hydrogen, 18 psi. 60F LT

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