Задача 10501.

A hollow copper ball weighs 1.78 N in air. In water, its weight is 1.42 N. Determine the volume of the cavity inside the ball. The density of copper is 8.9 g/cm^3 the density of water is 1 g/cm^3.

A detailed solution with a brief note of the condition, formulas and laws used in the solution, the derivation of the calculation formula and the answer.
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