A solid nonconducting sphere of radius R = 5.26 cm has a nonuniform charge distr

Question

A solid nonconducting sphere of radius R = 5.26 cm has a nonuniform charge distribution of volume charge density ? = (14 pC/m3)r/R, where r is radial distance from the sphere's center.
(a) What is the sphere's total charge?
1C

(b) What is the magnitude E of the electric field at r = 0? (Use any variable or symbol stated above along with the following as necessary: e0.)
E =

(c) What is the magnitude E of the electric field at r = R/2.00?
N/C

(d) What is the magnitude E of the electric field at r = R?
N/C

Explanation / Answer

similar question http://www.cramster.com/answers-sep-10/physics/solid-nonconducting-sphere-solid-nonconducting-sphere-radius-86-cm-nonu_933466.aspx?rec=0

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