Two charged particles traverse identical helical paths in a completely opposite sa uniform magnetic field b = bk. incert exemplar (a) they have equal 2-components of momenta (b) they must have equal charges (c) they necessarily represent a particle, anti-particle pair (d) the charge to mass ratio satisfy » satisfy: ()+ ), 0

Which changes of state do the labels represent? a: b: c:

Amira pulls a 3 pound wagon 4 feet. how much work has she done?

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?