2.2 Text Problem 2.19 in 7th Ed. (Problem 2.11 in 8th Ed has different window size and AT.) Consider a 300 mm x 300 mm window in an aircraft. For a temperature difference of 80C from the inner to the outer surface of the window, calculate the heat loss through L = 10-mm-thick polycarbonate, soda lime glass, and aerogel windows, respectively. The thermal conductivities of the aerogel and polycarbonate are kax = 0.014 W/mK and kpc = 0.21 W/mK, respectively. Evaluate the thermal conductivity of the soda lime glass at 300 K. If the aircraft has 130 windows and the cost to heat the cabin air is $1/kWh, compare the costs associ- ated with the heat loss through the windows for an 8-hour intercontinental flight