Wind Energy

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• Aerodynamics, how to find the right values of a and a'?

  1.The formula for finding x = ({Omega}* R )/v_0

  2.Solve[16 a^3 - 24 a^2 + a (9 - 3 x^2) - 1 + x^2 == 0, a]

  3. a is in interval (0<a<1)

  4. a' = (1 - 3 a)/(4 a - 1)

• How many numbers after comma I should enter?

  Coursera takes in unlimited about of numbers after comma, but we suggest you enter by approximation of 0.01, in cases where the answer is larger then 10000, the decimals are not necessary.

• Economics: Having problems with negative values!

  All answers are asked to be entered in absolute value.

• Economics: I am having problems with calculating NPV!

  You have included the present value of the decommissioning cost in the NPV calculation. We have not asked you to do that, so that is why answer is outside the range, but including these costs could also be done, so you are not entirely wrong.

• Will I earn university credit for completing the Course?

  This Course doesn't carry university credit, but some universities may choose to accept Course Certificates for credit. Check with your institution to learn more. Online Degrees and Mastertrack™ Certificates on Coursera provide the opportunity to earn university credit.

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