At a distance r1 from a point charge, the magnitude of the electric field created by the charge is 376 N/C. At a distance r2 from the charge, the field has a magnitude of 110 N/C. Find the ratio r2/r1.

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