A solid concrete wall 4.0 m by 2.4 m and 30 cm thick, with a thermal conductivity of 1.3 W/(m?K), separates a basement at 18°C from the ground outside at 6°C. Under steady state conditions, how much heat flows through the wall in one hour?
A) 1.8 MJ B) 1.8 kJ C) 5.0 MJ D) 500 J E) 5.0 kJ
A
Physics & Space Science
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