Aplane wall 6.0 cm thick generates heat internally at the rate of 300,000 w/m3 . one side of the wall is insulated and the other side is exposed to air at 93°c. the convective heat transfer coefficient between the surface of the wall and the air is 570 w/(m2 °c). the thermal conductivity of the wall is 21 w/(m °c). the system is at steady state. a. calculate the heat flux from the surface of the wall into the air. b. at what location in the wall will one find the maximum temperature?