Conduction: Some properties of a certain glass are listed here:Density 2300 kg/m3Specific 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°C and at the outer surface 4°C. How much heat is lost each hour through the window?
A. 3.1 × 107 J
B. 3.1 × 104 J
C. 8.6 × 103 J
D. 8.6 J
E. 3.1 × 105 J
Answer: A
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