I use an eliptical for 35 minutes and burn about 400 calories. Usually it's about 10-15 per minute, depending on how fast you're going and your resistance.
It depends on hwo active they are. Naturally, the human body burn about 1,000 calories a day to survive and do simple movements. Exercise increases that amount significantly.
Depends on how hard you're working, how fit you are, and how much muscles you have to work with. I can burn around of 900 cals in an hour, but it takes some doing to be able to maintain that output...
About 120 every mile. Keep at a decent pace, it's not about how hard you work out, but how long you do. Working out harder will only raise calorie burning by a small margin. You will burn more...