A student combs his hair with a plastic comb, and the hair becomes positively charged. What is the net charge of the comb and the hair and the direction of the charge
transfer?

A.)Protons move from the comb to the hair, and the total charge of the hair and the comb is positive.

B.)Electrons move from the hair to the comb, and the total charge of the hair and the comb is negative.

C.)Protons move from the comb to the hair and the total charge of the hair and the comb is zero.

D.)Electrons move from the hair to the comb, and the total charge of the hair and the comb is zero.

I think its B

Explanation:

because "This means that when you rubbed the plastic comb along your hair, your hair resisted the movement of the comb and slowed it down. The friction between two surfaces can cause electrons to be transferred from one surface to the other."

i guess that visual aids present persuasive examples to what you are presenting, some factors would be theme (does it fit with the color, information, what you are presenting), size (can you see it, is it a big enough span of data/information), and overall look of the visual aid.

hope this : )

i guess it’s a and b