139. Solving a chemistry problem

139. Solving a chemistry problem

Determine the radii of the metal particles dispersed in the water. The density of the dispersed phase is 1 * 10 ^ 4 kg / m3, the density of water is 1 * 10 ^ 3 kg / m3, the viscosity of water is η = 1.5 * 10 ^ -3 N * s / m2, the sedimentation rate of particles (m / s) of various sizes are: 1) 1.7 * 10 ^ -5; 2) 1.7 * 10 ^ -7; 3) 1.7 * 10 ^ -9.

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