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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

An object moves from position +34m to the position -15m in 15 seconds. what is the total displacement? what is the total velocity?

If an athlete runs once around a track, back to the starting line, her average velocity is zero. true or false?