1. The problem statement, all variables and given/known data Alice lives in the Quebec. She wishes to build a new home and paint one-half of the outside black and the other half white. She can either split the house east-west or north-south. State which half she should paint white and which half she should paint black in order to minimize heating costs and explain this decision based on thermodynamics. 2. Relevant equations N/A 3. The attempt at a solution Right now, I'm basically lost as to where to start. I know the sun rises in the east and settles in the west, so I am guessing I'm going to split the house east-west. Now, which side is better? I think Quebec would be colder when the sun is rising than when the sun is setting, so my best bet is that I should paint the east black to bring more radiation heat into the house.