Katie rubs a balloon against her hair. Electrons from her hair travel to the balloon, giving the balloon a negative charge and her hair a positive charge.

This image is courtesy of NASA

When the negatively charged balloon is brought near the strands of Katie's hair, they move to get closer to the balloon, without the balloon actually touching them. This shows that

Question

Katie rubs a balloon against her hair. Electrons from her hair travel to the balloon, giving the balloon a negative charge and her hair a positive charge.

This image is courtesy of NASA

When the negatively charged balloon is brought near the strands of Katie's hair, they move to get closer to the balloon, without the balloon actually touching them. This shows that

ivancsc1996 · Answer

Well, this shows that there exists a force at a distance due to the electric properties of the balloon and Katie's hair. The real question is if you are willing to accept that there exists forces that act at a distance.