Some properties of a certain glass are listed here: Density 2300 kg/m3 Specific heat capacity 840 J/kg ∙ C° Coefficient of thermal expansion 8.5 × 10-6 (C°)-1 Thermal conductivity 0.80 W/m ∙ C° A glass window pane is 2.7 m high, 2.4 m wide, and 9.0 mm thick. The temperature at the inner surface of the glass is 19.0 °C and at the outer surface 4°C. How much heat is lost each hour through the window

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