The inner and outer surfaces of a 0.5-cm thick 2-m 2-m window glass in winter are 10C and 3C, respectively. If the thermal conductivity of the glass is 0.78 W/m.C: 1- Determine the rate of the heat transfer through the window. 2- Determine the amount of heat loss, in kJ, through the glass over a period of 5 hours. 3- What would your answers be if the glass were 1 cm thick? 4- Reconsider the example Using EES (or other) software, plot the amount of heat loss through the glass as a function of the window glass thickness in the range of 0.1 cm to 1.0 cm. Discuss the results. Answers: (1) Q = 4368 W, (2) Q = 78624 kJ