Compare (take the ratio) the rate of heat conduction through a
20.0-cm-thick wall that has an area of 10.0 m2 and a thermal
conductivity twice that of glass wool with the rate of heat
conduction through a 0.750-cm-thick window that has an area of 2.00
m2, assuming the same temperature difference across each. Show a
few steps. Qualitatively, explain how you can reduce heat
conduction through a window in winter.