1. The problem statement, all variables and given/known data A heat pump requires 385 W of electrical power to deliver heat to your house at a rate of 2410 J per second. How many joules of energy are extracted from the cold air outside each second? 2. Relevant equations COP= Qc / W . This was the only equation I could find. 3. The attempt at a solution Any help would be nice! I tried the above equation but I turned out to be incorrect.