Why is it hard for electrons to move through an insulator

Curious carl calculated the density of a cube to be 4.50 g/cm3. what is the density of the cube in g/l?

Agas contained within a piston-cylinder assembly undergoes three processes in series: process 12: compression with pv= constant from 1 bar and 1 liter to 4 bar. process 23: constant pressure expansion to 1 liter. process 31: constant volume calculate the pressure and volume at each state, and sketch the processes on a p-vdiagram labeled with pressure and volume values at each numbered stat

J. j. thomson’s experiment disproved the theory that an atom