Question

question 19 of 25
when you take off a wool hat, some of the electrons from your hair transfer to the hat. when this happens, your hair can stand up on end. why doesnt gravity hold your hair down?
a. the distance to the center of earth is vastly larger than between the hat and your hair.
b. the gravitational force between the hat and your hair opposes earths gravitational force.
c. the electrical field caused by the charged hair disrupts the gravitational field near your hair.
d. the electrostatic force is stronger than the gravitational force between earth and your hair.

Explanation:

When electrons transfer from hair to the wool hat, hair becomes charged. The electrostatic force between the charged hair strands and the hat is strong enough to overcome the gravitational force of the Earth pulling the hair down. Gravitational force is relatively weak on small - scale objects like hair strands compared to the electrostatic force in this situation.

Answer:

D. The electrostatic force is stronger than the gravitational force between Earth and your hair.