The walls of your house generally consists of bricks of thickness 10 cm with thermal conductivity 1 W/(mK). If your house temperature is 20 C, and the outside is at 4 C (with a wind causing the convective heat transfer coefficient to be 40 W/(m2 K)), what is your steady state heat loss (in W) for the house if the total wall areas you have in contact with outside is 100 m2 ? If you also have an insulation layer of thickness 5 cm outside of the bricks with thermal conductivity of 0.06 W/(mK), what would be the heat loss under the same outside air conditions? By what percent can you prevent the total heat loss?