Those big yellow stickers on appliances give a good estimate about how much it will cost to run the thing for a year, but how is that stuph calculated?
We know Power = Rate of Energy transfer (P = E/t), and typically, Energy costs between 10-15 cents per KWhr. (Let's use 10 cents to make the calcs easier).
Check out what this site has to say about how to calculated energy power usage, and tomorrow we'll be finding out just how powerful YOU are :-)
http://energy.gov/energysaver/articles/estimating-appliance-and-home-electronic-energy-use
You may have heard about VAMPIRE POWER - here's an interesting set of data about how much energy is actually transferred to various appliances when in "stand-by" mode
http://standby.lbl.gov/summary-table.html
Does the table below make sense, or exaggerate?