# physics

posted by Alice

(a) How many kilograms of water must evaporate from a 60.0 kg woman to lower her body temperature by 0.750°C?

1. Elena

For human body c=3470 J/kg.
At 37.0ºC the heat of vaporization Lv for water is 2430 kJ/kg or 580 kcal/kg

m•c•Δt= m(cond) •L(v)
m(cond) = m•c•Δt/L(v) =
=60•3470•0.75/2430000 =6.43•10⁻² kg=64.3 g

## Similar Questions

1. ### Physics- LOST!

If the air temperature is the same as the temperature of your skin (about 30.0 C), your body cannot get rid of heat by transferring it to the air. In that case, it gets rid of the heat by evaporating water (sweat). During bicycling, …
2. ### algebra

the number of kilograms of water in a human body varies directly as the mass of the body an 87kg person contains 58kg of water how many kilograms of water are in a 72-kg person
3. ### college algebra

The rate at which water evaporates from a certain reservoir depends on the air temperature. The table below shows the number of acre-feet (af) of water per day that evaporate from the reservoir for various temperatures in degrees Fahrenheit. …
4. ### algebra

The rate at which water evaporates from a certain reservoir depends on the air temperature. The table below shows the number of acre-feet (af) of water per day that evaporate from the reservoir for various temperatures in degrees Fahrenheit. …
5. ### algebra

The rate at which water evaporates from a certain reservoir depends on the air temperature. The table below shows the number of acre-feet (af) of water per day that evaporate from the reservoir for various temperatures in degrees Fahrenheit. …
6. ### algebra

The rate at which water evaporates from a certain reservoir depends on the air temperature. The table below shows the number of acre-feet (af) of water per day that evaporate from the reservoir for various temperatures in degrees Fahrenheit. …
7. ### algebra

The rate at which water evaporates from a certain reservoir depends on the air temperature. The table below shows the number of acre-feet (af) of water per day that evaporate from the reservoir for various temperatures in degrees Fahrenheit. …
8. ### Physics

In one of your rigorous workout sessions, you lost 140 g of water through evaporation. Assume that the amount of work done by your body was 3.8 105 J and that the heat required to evaporate the water came from your body. (a) Find the …
9. ### physics

Tony£¬a 110kg football player£¬has a fever of 39celcius. What mass of water must evaporate from his body to cool him to 37celcius£¿
10. ### Physics

If the air temperature is the same as the temperature of your skin (about 30.0 oC), your body cannot get rid of heat by transferring it to the air. In that case, it gets rid of the heat by evaporating water (sweat). During bicycling, …

More Similar Questions