Which of the following is a force acting at a distance?

An object is 10. cm from the mirror, its height is 3.0 cm, and the focal length is 2.0 cm. what is the image height? (indicate the object orientation by including the + or - sign with the answer.) hi = cm +1.33 -1.33 +0.75 -0.75

In a system, when potential energy decreases, then entropy also decreases. true false

Alfred pushes on a heavy box, but cannot move it. the box has a lot of inertia motion friction gravity