College Physics with MasteringPhysics 7th Edition by Jerry Wilson,Anthony Buffa,Bo Lou

Exercise 81

A large window measures 2.0 m by 3.0 m. At what rate will heat be conducted through the window when the room temperature is 20 °C and the outside temperature is 0 °C if (a) the window consists of a single pane of glass 4.0 mm thick and (b) the window instead has a double pane of glass (a "thermopane"), in which each pane is 2.0 mm thick, with an intervening air space of 1.0 mm (Assume that there is a constant temperature difference and consider conduction only.)