Ask Question
23 May, 17:34

A 5000 kg African elephant has a resting metabolic rate of 2500 W. On a hot day, the elephant's environment is likely to be nearly the same temperature as the animal itself, so cooling by radiation is not effective. The only plausible way to keep cool is by evaporation, and elephants spray water on their body to accomplish this. If this is the only possible means of cooling, how many kilograms of water per hour must be evaporated from an elephant's skin to keep it at a constant temperature?

+2
Answers (1)
  1. 23 May, 21:27
    0
    36 kg

    Explanation:

    To answer this question, a few assumptions have to be made:

    That the temperature on the day is 35 °C That all the heat from the elephant is goes to warming/evaporating the water on the surface of the elephant

    Energy released per hour = 2500 J/s * 3600 s = 9 000 000 J

    Q = mcΔT

    9 000 000 J = m * 4.186 J/g-K * (373K - 308K) + m*2260 J/g

    m = 36 000 g = 36 kg
Know the Answer?
Not Sure About the Answer?
Get an answer to your question ✅ “A 5000 kg African elephant has a resting metabolic rate of 2500 W. On a hot day, the elephant's environment is likely to be nearly the same ...” in 📙 Physics if there is no answer or all answers are wrong, use a search bar and try to find the answer among similar questions.
Search for Other Answers