Balance the following chemical equation.
CCI4–>___C+___Cl2

It depends on the surface of the levels. the rougher the surface, the greater is the frictional force. for rougher surfaces, you would need to exert greater force to move the object. the concept is that, you must overcome the frictional force in order to bring the object into motion. this is the reason why we add lubricants to the joints so they could easily move. this answer was on

C. the area was covered by water. let me know if this

That is false even though water expands when frozen nothing changes at all