7. How and how many times will the settling rate of alumina particles with a density of 3.9 g/cm3 and a diameter of 10 µm change when replacing the dispersion medium, which was water, with glycerin? The viscosity of water and glycerin is 1.005 and 1500 cps, respectively, and the density is 998.2 and 1259.4 kg/m3.

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