A heavy box sits on a floor. The net force on the box can be represented as which of the following? A -zero vector pointing up
B. Non-zero vector pointing down
C. Non- zero vector pointing left
D. Non- zero vector pointing right
E. It is zero

Consider an ideal gas at 27.0 degrees celsius and 1.00 atmosphere pressure. imagine the molecules to be uniformly spaced, with each molecule at the center of a small cube. what is the length l of an edge of each small cube if adjacent cubes touch but don't overlap?