The volume charge density of a solid nonconducting sphere of radius R = 5.60 cm varies with radial distance r as given by ρ = (14.1 pC/m³)r/R.
a) What is the sphere’s total charge? What is the field magnitude E at
b) r = 0,
c) r = R/2.00, and
d) r = R?
e) Graph E versus r.