A pump at point A in a water delivery system produces 200 ft of head at a flow of 1000 gpm. It delivers water to a point B from a reservoir. If the head loss between point A and B is 20 feet, what is the pressure at point B in psi and kPa if B is at the same elevation as the water surface of the reservoir from which the pump is withdrawing water? (Ans: pB = 78.0 psi or 537.93 kPa)

The filament of an incandescent lamp has a temperature of 2000k. calculate the fraction of radiation emitted in the visible light band if the filament is approximated as blackbody

Slip occurs via two partial dislocations because of (a) the shorter path of the partial dislocation lines; (b) the lower energy state through partial dislocations; (c) the charge balance.

An open feedwater heater operates at steady state with liquid entering at inlet 1 with t? = 40°c and pl = 1 .2 mpa. water vapor att2-200°c and p2 = 1.2 mpa enters at inlet 2. saturated liquid water exits with a pressure of pa 1.2 mpa. neglect heat transfer with the surroundings and all kinetic and potential energy effects, determine the mass flow rate of steam at inlet 2 if the mass flow rate of liquid water at inlet 1 is given as 2 kg/s.