Five kg of water is contained in a piston-cylinder assembly, initially at 5 bar and 240°c. the water is slowly heated at constant pressure to a final state. if the heat transfer for the process is 2960 kj, determine the temperature at the final state, in °c, and the work, in kj. kinetic and potential energy effects are negligible.

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