A picture window has dimensions of 140m x 250m and is made, Ask an Expert

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A picture window has dimensions of 1.40m x 2.50m and is made of glass 5.20mm thick. On a winter day, the outside temperature is -15.0 degrees C , while the inside temperature is a comfortable 21.0 degrees C .

A. At what rate is heat being lost through the window by conduction?

B. At what rate would heat be lost through the window if you covered it with a 0.750 -thick layer of paper (thermal conductivity 0.0500 )?

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