Question

8
angie rubbed a balloon on her head. this caused her hair to become positively charged.
what happens to angies hair when it is positively charged?
a. the hairs fall out of her head.
b. the hairs repel each other.
c. the hairs get longer.

Explanation:

When an object (here, Angie's hair strands) has the same type of electric charge (positive, in this case), the principle of electrostatics states that like charges repel each other. Option A is incorrect because charging hair doesn't cause it to fall out. Option C is incorrect as charging doesn't change the physical length of hair. So the hairs with positive charge will repel each other.

Answer:

B. The hairs repel each other.