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Matter conversion into power

  1. Apr 25, 2015 #1
    1. The problem statement, all variables and given/known data
    What mass of mater would be converted to energy to provide 3200W of Power for 3 days?

    2. Relevant equations
    P=E/t
    E=mc2

    3. The attempt at a solution

    E=P*t
    Subbing mc2 for energy I get

    mc2=P*t

    m=P*t/c2

    m=(3200W*3Days)/(9X1016m2/s2)

    m= 1.066X10-13kg

    This answer is incorrect.
    What am I missing?
     
  2. jcsd
  3. Apr 25, 2015 #2

    SteamKing

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    Staff Emeritus
    Science Advisor
    Homework Helper

    What's the definition of a watt?

    Have you used consistent units, or did you just throw all your numbers in a big churn and crank out a meaningless answer?
     
  4. Apr 25, 2015 #3
    I threw all my numbers in a big churn and cranked out a meaningless answer.

    3 Days= 259200s

    Doing the same calculation I get 9.216X10-9kg

    Thank you :)
     
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