Question

select the correct answer. lucas rubs a plastic ruler on his sweater. he waves the ruler above a pile of shredded paper and notices that the pieces of paper get attracted to the ruler. which attractive force is responsible for this? a. tension force b. normal force c. magnetic force d. electric force

Explanation:

When Lucas rubs the plastic ruler on his sweater, it becomes charged through friction. The charged ruler then attracts the pieces of paper due to the electric force between the charged ruler and the neutral paper (polarization of charges in the paper). Tension force is related to pulling on ropes or strings, normal force is perpendicular to a surface in contact, and magnetic force involves magnets or magnetic - materials. Here, the attraction is due to static electricity.

Answer:

D. electric force