The power generated by a wind turbine is given by:
P =1/2epAv^3
Where e is the turbine efficiency, p is the density of air, A is the area spanned by the
wind turbine and v is the wind speed. Assume that we want to buy some number of
wind turbines with e = 1/2 and A = 4500 m^2 and that our site has average wind speed
v = 9 m/s. The density of air is p = 1.2 kg/m^3.
a) What is the power generated by one of these wind turbines?
b) If we want our wind farm to have a rated capacity of 750 MW how many of these
turbines will we need? (round your answer to the nearest whole number).