Final answer:
When a charged comb is held near a water stream after combing dry hair, the phenomenon observed is electrostatic attraction due to the electric force between the charged comb and the water.
Step-by-step explanation:
In an experiment with a plastic comb, faucet, and dry hair, when the comb is held close to the water stream after being run through dry hair multiple times, the phenomenon observed is electrostatic attraction. This occurs because the comb becomes electrically charged after being run through the hair, which is made of insulating material. The charges on the comb create an electric field, which induces charges in the water stream. As a result, the water stream is attracted to the comb. This is analogous to the experiment where a charged comb attracts small pieces of paper, confirming the involvement of the electric force.