Task 3. Calculate the value of the flow potential E if an aqueous solution of KCl is pressed through the collodion film at р = 20*10-2 Pa. Specific electrical conductivity of the medium χ = 1.3*10-2 Sm*m-1, viscosity η = 10-3 Pa*s, ξ-potential 6*10-3 V; dielectric constant ε = 81, electrical constant ε0 = 8.85*10-12 F/m.

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