A cable is made of two strands of different materials, A and B, and cross sections as follows: Material A: K = 40,000 psi, n = 0.5, Ao =0.42 in^2

Material B: K = 20,000 psi, n = 0.5, Ao =0.22 in^2

Calculate the maximum tensile force that this cable can withstand prior to necking.

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