Plz answer any one of these (leave the question number)

Several mountains together form a mountain . a few of these combined form a mountain system. several systems combined form a mountain , which can stretch thousands of miles in length.

The electric potential a distance r from a small charge is proportional to what power of the distance from the charge? a. r^-1 b. r c. r^-2 d. r^2

Amagnetic field applies forces on: a)static chargesb)moving chargesc)water flow