Question

The average human produces about 15 g of sweat per minute during intense activities.

a. If a jogger runs for 30 mins and evaporates all of the sweat he produces after his run, how much heat was transferred from his body to the sweat? Assume the jogger is always seating, the sweat’s initial temperature is 37°C, and that sweat has the same specific heat and latent heat as water.

b. A heat stroke occurs when a human’s body temperature reaches about 40.0°C. If the jogger was not sweating to cool themselves down, how long would it take for a heat stroke to occur? The specific heat of the human body is about 3500 J/(kg K). Assume the jogger weighs 180 pounds and that the body does not radiate heat out into the surroundings.

Answer 1