Awind turbine is rotating counterclockwise at 0.5 rev/s and slows to a stop in 10 s. its blades are 20 m in length. (a) what is the angular acceleration of the turbine? (b) what is the centripetal acceleration of the tip of the blades at t = 0 s? (c) what is the magnitude and direction of the total linear acceleration of the tip of the blades at t = 0 s?

-0.314 rad/s²

197.39 m/s²

197.49 m/s² and 1.822° counterclockwise.

Explanation:

= Final angular velocity

= Initial angular velocity

= Angular acceleration

= Angle of rotation

t = Time taken

R = Radius = 20 m

Angular acceleration of the turbine is -0.314 rad/s²

Centripetal acceleration

The centripetal acceleration of the tip is 197.39 m/s²

Tangential acceleration

Acceleration

Magnitude and direction of the total linear acceleration of the tip of the blades is 197.49 m/s² and 1.822° counterclockwise.

a.metals can become magnetic if they have many spinning electrons that create magnetic fields.d.only some metals are attracted by magnets; these metals are called ferromagnetic.

d.wrapping an insulated wire around a metal with ferromagnetic properties and applying an electric current.