A trapezoidal channel is to be excavated at a site where permit restrictions require that the channel have a bottom width of 5-m, side slope of 1.5:1 (H:V), and a depth of flow of 1.8-m. If the soil material erodes when the shear stress,, on the perimeter of channel exceeds 3.5-Pa, determine the appropriate longitudinal slope and corresponding flow capacity of the channel. Use Darcy-Weisbach equation, and assume that the excavated channel has an equivalent sand roughness of 3.0-mm

Apump is used to circulate hot water in a home heating system. water enters the well-insulated pump operating at steady state at a rate of 0.42 gal/min. the inlet pressure and temperature are 14.7 lbf/in.2, and 180°f, respectively; at the exit the pressure is 60 lbf/in.2 the pump requires 1/15 hp of power input. water can be modeled as an incompressible substance with constant density of 60.58 lb/ft3 and constant specific heat of 1 btu/lb or. neglecting kinetic and potential energy effects, determine the temperature change, in °r, as the water flows through the pump.

During a steady flow process, the change of energy with respect to time is zero. a)- true b)- false

Different types of steels contain different elements that alter the characteristics of the steel. for each of the following elements, explain what the element does when alloyed with steel.