Final answer:
The paper pieces will be attracted to the comb due to static electricity created by the friction between the comb and the hair.
Step-by-step explanation:
When a student repeatedly runs a comb through their hair and then brings it close to small pieces of paper, they will observe that the paper pieces are attracted to the comb. This happens due to static electricity, which is generated by the friction between the comb and the hair. The static charges accumulated on the comb attract the neutral paper pieces due to induction, causing the papers to move toward the comb.