water is pumped from a lower reservoir to a higher reservoir by a pump that provides 20 kw of useful mechanical power to that water. the free surface of upper reservoir is 45 m higher than the surface of the lower reservoir. if the flow rate of water is measured to be 0.03 m3/s, determine the irreversible head loss of the system.

Two microscope slides are placed horizontally, one on top of the other, with a drop of a dishwashing liquid between them. the gap between the slides is 1 mm. a machine pulls the top slide to the right with a velocity of 0.15 millimeters per second while the bottom slide is held stationary. a stress gage indicates that a shearing stress of 0.5 pa is required to pull the top slide with this velocity. if the dishwashing liquid adheres to both slides during this process, what is the viscosity of the liquid? specify whether your answer is dynamic or kinematic viscosity, and use appropriate units.