Adouble-pane insulated window unit consists of two 1-cm-thick pieces of glass separated by a 1.8 cm layer of air. the unit measures 4 m in width and is 3 m wide. under conditions where the extreme outside temperature of the glass is at 10°c and air, at 27°c, is adjacent to the inside glass surface, with hi 12 w/m2 ? k, determine a. the inside glass surface temperature b. the rate of heat transfer through the window unit the air gap between glass panes may be treated as a purely conductive layer with k 0.0262 w/m ? k. thermal radiation is to be neglected