I need help PLZ :( 1. The problem statement, all variables and given/known data A small insulating spherical shell with inner radius a=1cm and outer radius b=2cm is concentric with a larger insulating soherical shell with inner radius c=4cm and outer radius d=6cm . the inner shell has a nonuniform charge distribution =.005 r C/m^3 , and the outer shell has a uniform charge distribution and a total charge of 5 nC . 2. Relevant equations my question is what will the electric field be at boint at a distance r=5cm from the common center of both spheres 3. The attempt at a solution q/(4*pi*E0*(b-a)^2) ??