PL HELOk so there are 2 careers that I would like to do but I would like to do one of them more than the other even though the other one pays better. What I am choosing between is a registered nurse or a mechanic. I would like to be a nurse but I don’t like the thought of being inside all day. I would like to be a mechanic because I enjoy anything that deals with cars but it doesn’t have as good of pay. PL HELP I sign up for college classes tomorrow and need to make a decision. Please if you have a suggestion or idea on what to do please tell me I would greatly appreciated it:)

Along 8-cm diameter steam pipe whose external surface temperature is 900c connects two buildings. the pipe is exposed to ambient air at 70c with a wind speed of 50 km/hr blowing across the pipe. determine the heat loss from the pipe per unit length. (b) air at 500c enters a section of a rectangular duct (15 cm x 20 cm) at an average velocity of 7 m/s. if the walls of the duct are maintained at 100c. a) the length of the tube for an exit temperature of the air to be 40 0c. b)the rate of heat transfer from the air. c) the fan power needed to overcome the pressure drop in this section of the duct.