A 2[[tex]\mu[/tex]C] point charge is located at A(4,3,5) in free space. Find E[tex]\rho[/tex], E[tex]\phi[/tex], and Ez at P(8,12,2). I know I have to start off in rectangular, convert to cylindrical coordinates. I know how to find the R vector and |R|. Since it says there is a point charge, do I need to integrate anything? How would I find the 3 different components?