Recent content by jbphysics

the way I looked at it... If no energy went into the heating system of the house to maintain that temperature of 20* C, the house would surely decrease in temperature since the surroundings are colder. I was thinking all of the 45kwh went into the houses heating system and some of the heat was...

Tried to figure this out for a friend but couldn't quite get it. Here is the problem. For 3 hours one winter afternoon, outside temp is 0* C. A house is heated and kept at 20* C with the expenditure of 45 kwh. What was the average energy leakes in joules per second through the walls of the...