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## A two-dimensional, incompressible fluid flow is described by the stream function Ψ = xy 3 m2 /s on the Cartesian x-y plane. If the density and dynamic viscosity of the fluid are 1 kg/m3 and 0.1 kg/m-s, respectively, the magnitude of the pressure gradient in the x direction at x=1 m and y=1 m is _______ N/m3 (round off to 1 decimal place).

A two-dimensional, incompressible fluid flow is described by the stream function Ψ = x(y^3) m2/s on the Cartesian x-y plane. If the density and dynamic viscosity of the fluid are 1 kg/m3 and 0.1 kg/m-s, respectively, the magnitude of the pressure gradient in the x direction at x=1 m and y=1 m is _______ N/m3 (round off to 1 decimal place).

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