The blades of a windmill sweep out a circle of area A. (a) If the wind flows at a velocity v perpendicular to the circle, what is the mass of the air passing through in time t? (b) What is the kinetic energy of the air? (c) Assume that the windmill converts `25%` of the wind's energy into electrical energy, and that `A=30m^2`, `v=36kmh^-1` and the density of air is `1.2kgm^-3`, what is the electrical power produced?

The blades of a windmill sweep out a circle of area A. If the wind flows at a velocity v perpendicular to the circle, what is the mass of the air passing through it in time t?

The blades of a windmill sweep out a circle of area A. If the wind flows at a velocity v perpendicular to the circle, what is the mass of the air passing through it in time t?

The blades of a windmill sweep out a circle of area A. If the wind flows at a velocity V perpendicular to the circle, what is the mass of the air passing through it in time t?

The blades of a windmill sweep out a circle of area:- If the wind flows at a velocity v perpendicular to the circle, what is the mass of the air passing through it in time t ?

The blades of a windmill sweep out a circle of area A. (a) If the wind flows at a velocity v perpendicular to the circle, what is the mass of the air passing through it in time f?(b) What is the kinetic energy of the air? (c) 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 kg m^-3 . What is the electrical power produced?

the kinetic energy of the air is

the kinetic energy of the air is