During a tensile test of a steel specimen, the strain at a stress of 35 MPa was calculated to be 0.000 170 (point A). The strain at a stress of 134 MPa was calculated to be 0.000 630 (point B). Determine the modulus of elasticity for this material using the slope between these two points. Calculate the expected stress that would correspond to a strain of 0.000 250. The proportional limit is 200 MPa.

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.