Problem 20450.
What should be the mass of the shell of a children´s balloon filled with hydrogen so that the resulting lifting force of the ball is equal to zero, i.e., so that the ball is in suspension? Air and hydrogen are under normal conditions. The radius of the ball is 12.5 cm, the molar mass of air is 29 kg/mol.
Detailed solution with a brief record of the conditions, formulas and laws used in the solution, derivation of the calculation formula and answer.
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