Describe how oil and natural gas compare in terms of predicted supply and carbon dioxide emissions.

Pounds of CO2 emitted per million Btu of energy for various fuels: gasoline 157.2, propane 139.0, natural gas 117.0. The amount of CO2 produced when a fuel is burned is a function of the carbon content of the fuel. The heat content or amount of energy produced when a fuel is burned is a function of primarily the carbon (C) and hydrogen (H) content of the fuel. Heat is produced when C and H

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