Which universal force acts only on the protons and neutrons in a nucleus? * 5 points
electric
gravitational
magnetic
strong nuclear
Option 5

Which statement correctly describes a step-up transformer? a. it increases the amount of electric energy available. b. it increases the voltage of an electric current. c. it changes direct current into alternating current. d. it has more loops of wire in its primary coil.

When the magnetic domains in a material can be aligned, but eventually drift out of alignment, the material is

Two carts, one of mass 2m and one of mass m, approach each other with the same speed, v. when the carts collide, they hook together. assume that positive momentum is to the right. which graph best represents the momentum of both carts over time, before and after the collision?