24. Calculate the electrokinetic potential of the lead sol in methyl alcohol if for 100 minutes the level of the solution has shifted by 1.1 × 10 -4 m, with a tube length of 10-1 m and an applied voltage of the external electric field of 30 V; the viscosity of the sol is η = 0,61⋅10 ^ -3 Pa⋅s; the dielectric constant of the dispersion medium is ε = 34; ε0 = 8.85⋅10 ^ -12 F / m.
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