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Homework Help: Voltage vaporization

  1. Feb 6, 2008 #1
    1. The problem statement, all variables and given/known data
    A lightning flash transfers 2.5 C of charge and 3.3 MJ of energy to the Earth.

    (a) Across what potential difference did it travel? 1.32 MV
    (b) How much water could this boil and vaporize, starting from room temperature?

    2. Relevant equations

    need help finding equations for b

    3. The attempt at a solution

    none yet
  2. jcsd
  3. Feb 6, 2008 #2
    Do you know anything about specific heat and heat of vaporization?
  4. Feb 6, 2008 #3
    just basic energy and voltage equations
  5. Feb 7, 2008 #4
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