A house consists of four walls, and the ceiling and floor are well insulated. The wall of the house with thermal conductivity 
and surface area 
has a thickness of 
. The temperature outside the house is 
and the inside is 
.
Calculate the rate of heat flow through the wall if the temperatures on the inside and outside of the wall do not change?
What is the thermal resistance of the wall?
At what distance from the outer edge of the wall does the temperature 
appear?
At what time will the temperature in the house be the same as the temperature outside if we stop heating the house? Assume that the heat flow rate does not change over time.
.
at 6 cm from the outer edge of the wall.
