Задача 10891.

The glycerol with a density of 1.26 x 10 3 kg / m ^ 3, and a viscosity of 0.35 Pa * s, at a constant rate of 4.6 cm / s falls freely metal ball of radius 1 mm. Find the ball, and the density of the material from which it is made.

Detailed solution with a short recording conditions, laws and formulas used in the decision, the withdrawal of the calculation formula and the answer.
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