Figure shows, in cross section, two solid spheres with uniformly distributed charge throughout t...

Figure shows, in cross section, two solid spheres with uniformly distributed charge throughout their volumes. Each has radius R. Point P lies on a line connecting the centres of the spheres, at radial
P distance \( R / 2 \) from the center of sphere 1 . If the net electric field at point \( P \) is zero and \( Q_{1} \) is \( 64 \mu \mathrm{C} \),

W. what is \( \mathrm{Q}_{2} \) (in \( \mu \mathrm{C} \) ).
A) 64
(B) 36
(C) 32