1) A proton is at the origin and an electon is at the point x = 0.41 nm, y = 0.3

Question

1) A proton is at the origin and an electon is at the point x = 0.41 nm, y = 0.36 nm. Find the electric FIELD at the proton.

2) A thin spherical shell of radius 8.0 cm carries a charge of -20 nC distributed uniformly over its surface. Find the magnitude and direction of the                         electric field at the following distances from the center of the hollow sphere                     

                        a) r1 = 2.0 cm (inside the sphere)
                        b) r2 = 15.0 cm (outside the sphere)                     

PLEASE SHOW ALL WORK

Explanation / Answer

1. Electric field=9*10^9/(.41^2+.36^2)*(1.6*10^-19)*10^18= 4837084313.07 N/C

2.a)0

b)E=-20*10^-9/0.15^2*9*10^9=-8000N/C

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