A wall is constructed of an outer layer of 0.5 inch thick plywood (k = 0:80 Btu/h-ft-° F...

A wall is constructed of an outer layer of 0.5 inch thick plywood (k = 0:80 Btu/h-ft-° F), an inner core of 5 inch thick fiberglass insulation (k = 0:020 Btu/h-ft-° F), and an inner layer of 0.5 inch thick sheetrock (k = 0:10 Btu/h-ft-° F) (Figure P13–13). The inside temperature is 65 ° F with h = 1:5 Btu/h-ft²-° F, while the outside temperature is 0 ° F with h = 4 Btu/h-ft²-° F. Determine the temperature at the interfaces of the materials and the rate of heat flow in Btu/h through the wall.