A2.5" diameter steel bar is 8-ft long. the diameter is reduced to 1" in the 2-foot central portion of the bar. when an axial load is applied to the end of the bar, the axial strain in the central portion of the bar is 760 μin./in., and the total elongation of the bar is 0.03132 in determine: (1) the elongation of the central portion of the bar (2) the axial strain in the end portions of the bar. note: 1μ=1 x 10^-6

For the closed feedwater heater below, feedwater enters state 3 at a pressure of 2000 psia and temperature of 420 °f at a rate of ix10 ibhr. the feedwat extracted steam enters state 1 at a pressure of 1000 psia and enthalpy of 1500 btu/lbm. the extracted er leaves at an enthalpy of 528.7 btu/lbm steam leaves as a saturated liquid. (16) a) determine the mass flow rate of the extraction steam used to heat the feedwater (10) b) determine the terminal temperature difference of the closed feedwater heater