Practice question

Question

Shear stress (τ, Pa) and shear rate (γ, s ⁻¹ ) relationship of a pseudoplastic fluid follows the Power law equation given by, τ = kγ ⁿ = 2.6 γ0.45, where ‘n’ and ‘k’ are flow behavior index and consistency index respectively. The apparent viscosity (μa) of the fluid at a shear rate of 5 s ⁻¹ is _______ Pa s.