In a geocentric model of the universe, the planets and the sun move around a central earth.
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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

Holes drilled several kilometers into earth’s crust provide direct evidence about earth’s interior in the form of

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