An aircraft is flying at sea level with a velocity of 260 m/s, if we consider its wing as a rectangular flat plate of span 10.0m and chord 2.0m, calculate the boundary layer thickness at the wing trailing edge and total skin friction drag for: (density = 1.225 kg/m3, dynamic viscosity = 1.8 x 10-5 kg/ms, assume that the flow is incompressible). (i) completely laminar flow (ii) completely turbulent flow

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.

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.

Water vapor initially at 10 bar and 400 °c is contained within a piston-cylinder assembly. the water lost heat to the surrounding according to isochoric (iso-volumetric) process until its temperature is 150 °c. the water is then condensed isothermally to saturated liquid. for the water as a system, calculate the work in kj/kg