What charge does vinyl carry? When?

When rubbed together with wool, vinyl carries a negative charge.

What charge does acetate carry? When?

When rubbed together with cotton, acetate carries a positive charge.

What happens when two positively charged objects are close together?

When two positively charged objects are close together, they repel one another.

What happens when two negatively charged objects are close together?

When two negatively charged objects are close together, they repel each other.

What happens when positive and negative objects are close together?

When a negatively charged object and a positively charged object are close together, they attract each other.

What happens when a neutral object is close to a charged object?

When a neutral object is close to a charged object, they attract each other.