Physics - Heat & Thermo Question with Solution | TestHub

A double-glazed window has two glass sheets, each 60 cm $\times$ 90 cm $\times$ 0.40 cm, separated by a 0.50 cm layer of still air. The inner surface is at 30°C and the outer surface at 0°C. $K_{glass}=2.0\times 10^{-3}$ and $K_{air}=2.0\times 10^{-4}$ cal s⁻¹ cm⁻¹ °C⁻¹. Find the power transmitted through the window, in cal/s.