Which statement most thoroughly describes the profession of an engineer? Engineers should never complete a project without collaborating with experts in other fields. Engineers strive to complete a project in the most cost-conscious and timely manner possible. Engineers work in teams to design and implement various products using specific processes. Engineers are being increasingly constrained by governmental regulations, limiting their creativity and effectiveness.

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