Question

Consider a rubber rod having been rubbed with fur to give the rod a net negative charge, and a glass rod having been rubbed with silk to give it a net positive charge. Compared to their masses before the rods were rubbed with fur and silk,a) both rods have more mass after having been rubbed.b) both rods have less mass after having been rubbed.c) the rubber rod has less mass and the glass rod has more mass than before they were rubbed.d) the rubber rod has more mass and the glass rod has less mass than before they were rubbed.

Answer 1

Answer:

D

Explanation:

The rubber rod having been rubbed with fur get a net negative charge thereby gaining more mass which means the mass has increased compared to before it was rubbed against the fur while the glass rod having been rubbed with the silk to give it a net positive has lost mass and therefore has less mass compared to before it was rubbed on the silk.