Final answer:
When a comb is run through hair and brought near paper pieces, the paper is attracted due to static electricity generated from the friction, demonstrating electrostatics and electric force.
Step-by-step explanation:
In an experiment where a student runs a comb through their hair several times and then brings it close to small pieces of paper, the student will observe that the pieces of paper are attracted to the comb. This phenomenon occurs due to the buildup of static electricity on the comb as a result of friction between the comb and the hair.
The comb becomes electrically charged, and these charges can attract neutral objects, such as small pieces of paper, which experience a charge separation due to the electric field of the comb, leading to an attractive force. This experiment is a classic demonstration of electrostatics in action and the concept of the electric force.