Which of the following might be a job or task of an IT worker who manages
networks?
A. Sets up a LAN for the office
O
O
B. Checks employee eligibility for promotions
O
C. Checks drivers licenses for tampering
O
D. Develops software to help retirement planning

Air (c-1.006 kj/kg.k, r-0.287 kj/kg.k) enters a nozzle steadily at 280 kpa and 77°c with a velocity of 50 m/s and exits at 85 kpa and 320 m/s. the heat losses from the nozzle to the surrounding medium at 20°c are estimated to be 3.2 kj/kg. determine (a) the exit temperature and (b) the total entropy change for this process. solve this problem using constant specific heats.