One way you keep from overheating is by perspiring.

Evaporation—a phase change—requires heat, and the heat energy

is removed from your body. Evaporation is much like boiling,

only water’s heat of vaporization at ${35}^{0}C$is a somewhat larger

$24\times {10}^{5}J/kg$Because at lower temperatures, more energy is required.

to break the molecular bonds. Very strenuous activity can

This causes an adult human to produce 30 g of perspiration per minute.

If all the perspiration evaporates, rather than drips off, at what

rate (in J/s) is it possible to exhaust heat by perspiring?

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