A Window Glass That Is 0 $\mathrm { W } / \mathrm { m } \cdot \mathrm { K }$

A window glass that is 0.5 cm thick has dimensions of 3 m by 1.5 m. The thermal conductivity of this glass is 0.8 $\mathrm { W } / \mathrm { m } \cdot \mathrm { K }$ If the outside surface of the glass is at $- 10 ^ { \circ } \mathrm { C }$ and the inside surface is at $20 ^ { \circ } \mathrm { C }$ how much heat flows through the window in every hour?

A) 80 MJ
B) 60 MJ
C) 70 MJ
D) 50 MJ

Correct Answer:

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