1. The problem statement, all variables and given/known data If 630W is dissipated as thermal energy/heat how much liquid is lost from the body? 3. The attempt at a solution I have got through a 3 part problem (re: energy, work etc) and found how much energy is dissipated as heat (630W), but I have no info that leads me to the answer to the last part - how much liquid is lost as sweat. I don't have information on weight, temp or anything else as it wasn't provided in the question. The metabolic rate to 700W and the efficiency is 10% so 630W is left as heat.