Charge is uniformly distributed around a ring of radius r = 7.40 cm, and the resulting electric field magnitude e is measured along the ring's central axis (perpendicular to the plane of the ring). at what distance from the ring's center is e maximum?

In a system with only a single force acting upon a body, what is the relationship between the change in kinetic energy and the work done by the force? answers: work is equal to the change in kinetic energy.work depends on the square of the change in potential energy.work is equal to the negative of the change in kinetic energy.work is equal to the square of the change in kinetic energy