Posted by **Hannah** on Saturday, May 1, 2010 at 4:48am.

During a dry day, a 70.0 kg athlete runs a marathon while the outside temperature is T2 = 33.2 ¢XC. The thermal power produced by the athlete's body is P = 1.05 ¡Ñ 103 W and the skin temperature is T3 = 35.5 ¢XC so that the themal exchange due to convection, radiation and conduction are negligible.

a) What quantity of sweat must be evaporated per second so that the athlete's body temperature will remain constant.

b) The maximum sweat production rate is Ds = 0.220 g s−1. What is the thermal energy increase of the athlete's body per second?

c) How long would it take to increase the body temperature by 1.00 ¢XC if there is no other mechanism of heat loss other than evaporation? The specific heat of the athlete's body is 4.50 ¡Ñ 103 J kg−1 K−1

## Answer This Question

## Related Questions

- Math - Refer to the following chart. Using the equation (body-size factor X ...
- algebra - Heart Rate An athlete starts running and continues for 10 seconds. The...
- Physics - An athlete running on curved track with 15 m radius and with speed of ...
- college physics - One athlete in a race runnng on a long, straight track with a ...
- College Physics - A force platform is a tool used to analyze the performance of...
- Physics (Help please) - A force platform is a tool used to analyze the ...
- pe - "Being an athlete takes more brains than brawn. It takes time and effort. ...
- Chemistry - If an athlete weighs 153lb and has 15.0% body fat by weight, how ...
- physics - The motion of a human body through space can be modeled as the motion ...
- physics - An athlete runs from one end to the other end of a semicircular track ...

More Related Questions