Many species cool themselves by sweating, because as the sweat evaporates, heat is transferred to the surroundings. a human exercising strenuously has an evaporative heat loss rate of about 650 w. if a person exercises strenuously for 29.1 min, how much water must he drink to replenish his fluid loss? the heat of vaporization of water is 2430 j/g at normal skin temperature.

Suppose a wire with a current is pushed upward by a magnetic field. how would the wire move if the direction of the current reversed? explain your answer.

Abag of potato chips contains 2.00 l of air when it is sealed at sea level at a pressure of 1.00 atm and a temperature of 20.0 deg c. what will be the volume of the air in the bag if you take it with you, still sealed, to the mountains where the temperature is 7.00 deg c and atmospheric pressure is 70.0 kpa? assume that the bag behaves like a balloon and that the air in the bag is in thermal equilibrium with the outside air.

Contains chemical energy. a. heat b. light c. natural gas