A 12.0kg box rests on a smooth table. A downward force of 40.0N is applied to the box. What is the normal force (FN)?

Two forces produce equal torques on a door about the door hinge. the first force is applied at the midpoint of the door; the second force is applied at the doorknob. both forces are applied perpendicular to the door. which force has a greater magnitude?

Observations show that interstellar clouds can have almost any shape and

Ryan is examining the energy of the particles in a bar of gold. what is ryan most likely studying?