Chem E help- any help is appreciated?

Your body is constantly maintained at 98.6 ◦ F, or 37C. You burn food to maintain this temperature. Rather than scrimp on food, or eat healthy, or – gasp – exercise, why not just make your thermostat work a little harder? Here’s the plan: fill your bathtub with ice water (0 C), then lay down in it for one half hour per day, while watching Judge Judy on TV. ume Newton’s law of cooling (heat transfer coefficient h ≈ 500W/m2 C, which I got uming a 1 mm boundary layer), and that your body has about 2 m2 of surface area. How much Joules of energy do you lose to the ice water during this time? Convert this energy to kilocalories (which is a food ‘calorie’). Since a Big Mac, super-size fries, and diet coke run about 1200 ‘calories’ (kcal), how many such value meals can you now eat without gaining weight?