9. Based on the data in Table 3, determine the values ​​marked with “?”

Option Substance Sedimentation time t, min Particle radius r, μm Density p*10-3, kg*m3 Dispersion phase Dispersion medium Viscosity of the dispersion medium n*103, Pa*s Sedimentation velocity U, m*s-1 Sedimentation height h*102, m

9 Sand 55? 2.10 0.998 1.04 ? 22.0

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