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Homework Help: Ocean - energy

  1. Mar 20, 2013 #1
    1. The problem statement, all variables and given/known data
    Philosophizing in physics lessons ... How much energy is needed to evaporate all the oceans on Earth?


    2. Relevant equations
    So, I think: E=Q=mL
    And variables i found...

    I don't care specific calculation, I interested in method... It is good?

    Sorry for my bad English and thanks!
     
  2. jcsd
  3. Mar 20, 2013 #2

    haruspex

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    Don't forget you need to raise the temperature to boiling as well. What's the average temperature of the oceans?
     
  4. Mar 21, 2013 #3
    Ouu, yes...
    So, first: Q=mc(t_1-t_2) an then Q=mL?
    The average temperature of the ocean surface waters is about 17 degrees Celsius (62.6 degrees Fahrenheit). BY: http://www.windows2universe.org/earth/Water/temp.html
     
  5. Mar 21, 2013 #4

    haruspex

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