One of the glass windows in a house has the shape of a square 1.0 m on a side. The glass in the window is 0.50 cm thick. How much heat is lost through the window in one day, 24 hrs, if the temperature in the house is 21 degC and the temperature outside is 0.0 degC?

Table 13.1 Thermal Conductivityes of Selected Materials Thermal Conductivity, k Substance [J/(s . m . Co)] Metals Aluminum 240 Brass 110 Copper 390 Iron 79 Lead 35 Silver 420 Steel (stainless) 14 Gases Air 0.0256 Hydrogen (H2) 0.180 Nitrogen (N2) 0.0258 Oxygen (02) 0.0265 Other Materials Asbestos 0.090 Body fat 0.20 Concrete 1.1 Diamond 2450 Glass 0.80 Goose down 0.025 Ice (0 .C) 2.2 Styrofoam 0.010 Water 0.60 Wood (oak) 0.15 Wool 0.040 Except as noted, the values pertain to temperatures near 20 .C