The blades of a windmill sweep out a circle of area A. Assume that the windmill converts 25% of the wind's energy into electrical energy, and that A= 30 m^(2), v= 36 km/h and the density of air is 1.2 kgm^(-3). What is the electrical power produced?

The blades of a windmill sweep out a circle of area A. Assume that th

1.	The blades of a windmill sweep out a circle of area A. Assume that the windmill converts 25% of the wind's energy into electrical energy, and that A= 30 m^(2), v= 36 km/h and the density of air is 1.2 kgm^(-3). What is the electrical power produced?
Answer» <P> SOLUTION :`P= 4.5 KW`