A wind of velocity 10 m/s is blowing through a wind generator with blade radius 5.00 meters. What is the maximum power output if 30.0% of the wind's energy can be extracted? ?air = 1.25 kg/m3.
A. 7.20 kW
B. 14.7 kW
C. 21.3 kW
D. 29.4 kW
E. 39.6 kW
Answer: B
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