Given the following data, plot the stress-strain curves for the two unknown materials on the same set of stress-strain axes. Density4.43g/cm33.98g/cm3E114 GPa380 GPa0.340.22Yield stress (at 0.2% strain)830 MPaNot applicableUltimate tensile strength900 MPa550 MPaFailure stress840 MPa550 MPa% elongation14NegligibleWhat likely types are Materials A and B?

At steady state, air at 200 kpa, 325 k, and mass flow rate of 0.5 kg/s enters an insulated duct having differing inlet and exit cross-sectional areas. the inlet cross-sectional area is 6 cm2. at the duct exit, the pressure of the air is 100 kpa and the velocity is 250 m/s. neglecting potential energy effects and modeling air as an 1.008 kj/kg k, determine ideal gas with constant cp = (a) the velocity of the air at the inlet, in m/s. (b) the temperature of the air at the exit, in k. (c) the exit cross-sectional area, in cm2