Задача 20378.

At the bottom of a cylinder filled with air, the density of which is 1.29 kg/m^3, lies a hollow metal ball with a radius of 1 cm. To what pressure must the air in the cylinder be compressed for the ball to float? The experiment is carried out at T = 290 K. Air is considered an ideal gas. Ball mass w = 5 g.

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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