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Please help me, am really bad in physics.

  1. Sep 15, 2015 #1
    1. The problem statement, all variables and given/known data
    At a certain location, wind is blowing steadily at 10m/s . Determine the mechanical energy of air per unit mass and the power generation potential of a wind turbine with 60m diameter blades at the location. Density of air is 1.25kgm-3. ( ans : 0.05kJ/kg, 1770kW )

    2. Relevant equations


    3. The attempt at a solution
    I'm seriously bad at physics and I totally have no idea at all in this question, so there is no attempt at all. Please help me.
     
  2. jcsd
  3. Sep 15, 2015 #2

    haruspex

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    What happens to a wind when it passes through a turbine? Where does the energy come from that drives the turbine?
     
  4. Sep 15, 2015 #3
    Hi haruspex, the question given is just like this. :frown:
     
  5. Sep 15, 2015 #4

    haruspex

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    I'm asking you to think.
     
  6. Sep 15, 2015 #5
    The wind pass through the turbine just like that isn't it? The energy that drives the turbine, mechanical energy?
     
  7. Sep 15, 2015 #6

    haruspex

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    Is the wind exactly the same after it has passed through? Yes, it's mechanical energy, but what form does that take in a wind?
     
  8. Sep 15, 2015 #7
    The velocity of the wind changed? Hmmm.... kinetic energy is the answer?
     
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