The correct statement about the relation between the shear stress (force) at the surface for laminar and turbulent flow over a flat plate is. o the laminar shear stress is greater because the fluid viscosity is not important in turbulent flow o the turbulent shear stress is greater because the mixing dissipates more energy, producing a greater stress at the wall o the laminar and turbulent shear stresses are equal at the same position (x) along the plate, but since turbulence occurs farther down the plate it produces a higher shear stress the laminar shear stress is less because the boundary is thinner in the laminar regime.

An external consultant recommends that a plant installs a bank of capacitors for power factor correction. this will reduce the peak electrical demand charges by an average of 93 kw every month. the plant current pays $13 per kw in peak demand charges. the capacitor bank will include 223 kw of fixed capacitors, and 183 of variable capacitors. the fixed capacitors cost $59 per kw, and the variable capacitors will cost $65 per kw. the consultant charges 21% of the equipment costs to install the capacitors. because this project will reduce the demand for the electric utility, they are prepared to provide a one-time rebate of $42 per kw of reduced demand. what is the simple payback period for this project (in years)?