I. The material is medium conductive $=3\mathrm{.}5$ S$/$m of region $1$ and it is showing very good characteristics of the material.The material of region $1($z$<0)$ contains a dielectric for which r$=3\mathrm{.}5,$ while region $2($z$>0)$ is characterized by r$=5.$ Let E$1=-30$ax $-50$ay $+90$az V$/$m$.$ Find: i$.$ Electric Density of region $2,$ ii$.$ Polarization of region $2$ iii. The angle between E$1$ and the normal to the surface. II$.$ In free space, V $=6$xy$^2$ z $+8.$ At point P$(1,-2,5),$ find E and pv