Answer:
Rubber on steel and Rubber on dry concrete
Explanation:
Friction is the force of resistance on the solid motion surfaces.
Coefficient of The ratio of frictional force between two body and the forces that brings them together. It depends on the temperature, velocity of the object involved.
Rubber is said to exhibit a high coefficient of friction with other surface ranging from 1 to 2 while Dry surface material yield between 0.3 to 0.6. When friction is greater than 1 it means the force that is needed to slide or move an object on the surface is greater than the force that exist on the surface of the object.
Well im a 7th grader so ok it can be true that cells were just small they did not know how to grow bigger so they just stay still traveling around living organisims after a while a cell meets another cell and the and join together to make bigger cells all to make tissues and tissiues made organs organs make systems and the system to make the organism. note i go to a jamaican school so we kinda learn more quicker than u guys.
The Milky Way is a spiral galaxy
hope this helps:)
Substrate level phosphorylation is the formation of ATP to ADP. Due to substrate level phosphorylation, glycolysis forms 4 ATP.
