Which type of material does not transfer heat well? a. a thermal conductor, such as helium b. a thermal insulator, such as copper c. a thermal conductor, such as copper d. thermal insulator, such as helium

Why are biogeochemical cycles important? earth is a closed system. that means the amount of rocks, metals, carbon, nitrogen, oxygen, and water on so, it is essential that biogeochemical these materials as they move through earth's subsystems.

Agas initially at p1 = 1 bar and occupying a volume of 0.5 liter is compressed within a piston–cylinder assembly to a final pressure p2 = 4 bar. (a) if the relationship between pressure and volume during the compression is pv = constant, determine the volume, in liters, at a pressure of 3 bar. (b) repeat for a linear pressure–volume relationship between the same end states. reference

Mechanical energy is when the amount of kinetic and potential energies added together remains the same. conserved created lost