A major source of heat loss from a house in cold weather is through the Part A windows. Calculate the rate of heat flow by conduction through a glass window 2.0 m x 1.5 m in area and & = 4.0 mm thick (Figure 1), if the temperature at the inner and outer surface is 15.0"C. Assume that there are strong gusty winds and the external temperature is -8.0 "C. Express your answer to two significant figures and include the appropriate units. Figure HA ? -15.0 9