Asked this already. but wouldn\'t let me update Two concentric spheres are shown

Question

Asked this already. but wouldn't let me update

Two concentric spheres are shown in the figure. The inner

sphere

is a solid nonconductor and carries a charge of +5.00

µC uniformly distributed over its outer surface.

The

outer sphere is a conducting shell that carries a net charge

of

-8.00 µC. No other charges are present. The

radii

shown in the figure have the values

R1 = 10.0 cm,

R2 = 20.0 cm,

and R3 = 30.0 cm.

PART A: Find the total excess charge on the

inner

and outer surfaces of the conducting sphere.

PART B: Find the magnitude and direction of the

electric field at

the r = 9.5 cm from the center of the

inner

sphere.

PART C: Find the magnitude and direction of the

electric field at

ther = 15.0 cm from the center of the

inner

sphere.

PART C: Find the

magnitude and direction of the electric field at

the r = 35.0 cm

from the center of the inner

sphere.

Explanation / Answer

net charge: -3 uC

b) enclosed charge is 0, so no electric field

c) 1.99818*10^6 N/C

d) -220207 N/C

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