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 )?