1.A straight wire 50 cm long conducts a 6.0 A current directed up out of the page. If the wire experiences a force of 0.24 N to the right due to a magnetic field perpendicular to its length, what is the magnitude and direction of the magnetic field?

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=0s? (c) what is the magnitude and direction of the total linear acceleration of the tip of the blades at t=0s?

How do you know how many valence electrons an atom has?

Think you could get me the answers ?