The temperature in an electric oven is 160-degrees C. The temperature at the outer door surface in the kitchen is 50-degrees C. The oven (surface area = 1.6 m^2) is insulated with a material that has a thickness of 0.020-m and a thermal conductivity of 0.045 J/(s X m X degree C). (a) How much energy is used to operate the oven for six hours? (b) At a price of $0.10 per kilowatt X Hour for electricity, what is the cost of operating the oven? Topic: The Transfer of Heat; Conduction.