Which change increases the electric force between objects?
-two neutral objects are moved closer together.
-electrons are added to two negatively charged objects.
-two oppositely charged objects are moved farther apart.
-the charge on two positively charged objects is reduced.

The place you get your hair cut has two nearly parallel mirrors 6.00 m apart. as you sit in the chair, your head is 2.00 m from the nearer mirror. looking toward this mirror, you first see your face and then, farther away, the back of your head. (the mirrors need to be slightly nonparallel for you to be able to see the back of your head, but you can treat them as parallel in this problem.) how far away does the back of your head appear to be?

An object moves from the position +34m to the position -15m in 15 seconds. what is it's total displacement? what is it's average velocity?

True or false graphs must include scales that increase by the same amount