physics

A common naturally-polarized but of matter is:

a water molecule

Particle A has twice the charge of nearby particle B. Compared to the force on particle A, the force on particle B is:

The same

It is said that electric charge is conserved, which means that electric charge:

can be neither created nor destroyed

To say that an object becomes electrically polarized means that

its charges have been rearranged

a fundamental rule of electricity is that

like kinds of charges repel, unlike kinds of changes attract

In an electrically neutral atom the number of protons in the nucleus is equal to the number of:

like kinds of charges, unlike kinds of charges attract

Conducting materials are composed of atoms with

loose out electrons

Charge carriers in a metal are electrons rather than protons because electrons are

loosely bound

An uncharged pith ball is suspended by a nylon fiber. When a positively charged rubber rod is brought nearby, the pith ball:

moves toward the rod

If you comb your hair and the comb becomes positively charged, then your hair becomes

negatively charged

Insulting materials are composed of atoms with:

tightly bound outer electrons

Two charges that are seperated by one meter exert 1-N forces on each other. If the magnitude of each charge is doubled, the force on each charge is

4N

Electrons can be transferred from one place to another by the process of

friction, contact, induction

The force that binds atoms together to form molecules is

electrical

To become a negative ion, an atom must

gain an electron

A negatively charged rod is held near an aluminum can that rests on a dry wood table, If you momentarily touch the opposite side of the can with your finger, the can becomes:

positively charged

When the distance between two charges is halved, the electrical forced between them:

quadruples

A main difference between gravitational and electric forces is that electrical forces:

repel or attract