Physics

A person can pick up ants in many ways. They can use tweezers to pick them up, they can use sticks or cloth to pick them up as well.

a generator

Magnetic fields do, because there's no such thing as an isolated magnetic "pole",

and a magnetic line always starts and ends at opposite poles of the same

magnetized object.

But electric fields don't. You can easily have a bundle of isolated positive charge

over here and a bundle of isolated negative charge over there, whereupon the

lines of the electric field start on one bundle and end on the other bundle.

But electric field lines can also exist in closed loops, and they do that in radio waves, where the electromagnetic field propagates with an electric field component and a magnetic field component, and they both form closed loops.

refracted

not magentic

-5 m/s2

Kinetic and potential

CD

Some northern states made slavery against the law.

a copper wire carrying current and another magnet.