8.5 A horizontal laminar flow occurs between two infinite parallel plates that are 0.3 m apart. The velocity at the centerline is 2.7 m/s.

Determine the flow rate through a section 0.9 m wide, the velocity gradient at the surface of the plate, the wall shearing stress, and the pressure drop for a 30 length. The fluid viscosity is 1.44 N s/m2.