A wall that is 2.74 m high and 3.66 m long has a thickness composed of 1.00 cm of wood plus 3.00 cm of insulation (with the thermal conductivity approximately of wool). The inside of the wall is 23.0°C and the outside of the wall is at − 5.00°C.
(a) What is the rate of heat flow through the wall?
(b) If half the area of the wall is replaced with a single pane of glass that is 0.500 cm thick, how much heat flows out of the wall now?