Water flows at a rate of 10 gallons per minute in a new horizontal 0.75 in diameter galvanized pipe (e-0.000s ft). determine the pressure gradient, deltap/1, along the pipe. (note: 231 in per gallon)

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