The weather in Bagota

In t time, all the wind energy with a cross-sectional area of 20m2 is converted into electric energy. According to the law of conservation of energy, there are:

Pt= 12mv2

Where m=ρV=ρ×vtS

Therefore, p =12ρ sv3 =12×1.3× 20× 203 =1×105w.

So the answer is: 12ρSv3, 1× 105.