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Homework Help: Electrical energy

  1. Jan 13, 2017 #1
    1. The problem statement, all variables and given/known data

    A power plant burns coal and generates an average of 700.0 Megawatts (MW) of electrical power while discharging 1162.00 MW as waste heat. Find the total electrical energy generated by the plant in a 30-day period.

    2. Relevant equations

    W = J/sec

    3. The attempt at a solution

    Total of, 1862 MW, which are 1.862x10^9 W.
    In 30 days there are 2.592x10^6 seconds.

    1.862x10^9 * 2.592x10^6 = 4.826x10^15 J.

    I don't know why it's incorrect. This is a question from an online learning system, and it tells me this answer is wrong. Would love some help.
  2. jcsd
  3. Jan 13, 2017 #2


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    Staff: Mentor

    What is your definition of waste heat?
  4. Jan 13, 2017 #3


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    Science Advisor
    Homework Helper
    2017 Award

    Where do you see the 1862 ? It asks for generated electrical energy !?
  5. Jan 13, 2017 #4
    Oh wow, I don't know why I did that. I got all the answers now, thanks!
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