The member A-F is fixed to a wall at A. Determine the (a) reaction at the wall; and (b) total change in length (E = 200 GPa).

An air conditioning system consist of a 5 cm diameter pipe, operating at a pressure of 200 kpa. the air initially enters the pipe at 15°c with a velocity of 20 m/s and relative humidity of 80%. if the heat supply throughout the process is 960 w, determine the relative humidity and the temperature at the outlet