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mikael mikael
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9 years ago

 
Some properties of glass are listed here.   

   Density   2300 kg/m3
   Specific heat   840 J/Kg • °C
   Coefficient of linear thermal expansion   8.5 × 10-6 (°C) -1
   Thermal conductivity   0.80 J/s m • °C   
   
A glass window pane is  1.4 m high,  1.1 m wide and  3 mm thick. The temperature at the inner surface of the glass is 22°C and at the outer surface 4°C. How much heat is lost each hour through the window? 
A)
 
2.7 × 107 J 
B)
 
2.7 × 104 J 
C)
 
7.4 × 103 J 
D)
 
7.4 J 
E)
 
2.7 × 105 J 
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padrepadre
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mikael Author
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9 years ago
Thanks for helping me on my physics homework
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