If wood on concrete has a coefficient of kinetic friction equal to 0.80, how much force is required to move a 200. N wooden box across a concrete sidewalk?

Ch4 is nonpolar and insoluble in water. since all of the hydrogen atoms are evenly spread around the carbon atom even through the c h bond is polar all the poles cancel each other out.

Its a hope this

It can be classified based on its

Ibelieve the answer is weathering,hope my answer has you : )