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dfetnum

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## Homework Statement

Two metallic spheres have radii of 19.1 cm and 11.5 cm, respectively. The magnitude of the electric field on the surface of each sphere is 3490 V/m. The two spheres are then connected by a long, thin metal wire.

a) Determine the magnitude of the electric field on the surface of the sphere with radius 19.1 cm when they are connected.

b) Determine the magnitude of the electric field on the surface of the sphere with radius 11.5 cm when they are connected.

## Homework Equations

E=kq/r^2

## The Attempt at a Solution

I found the charge on each of the spheres by solving for q with the given formula. I got q1=1.4E-8 C and q2=5.1E-9C. When the spheres are connected the charge is evenly distributed among the surface area. I calculated the surface areas to be .458m^2 and .116m^2. I then found the percentage of total surface area for the first one and got .733. I used this times the sum of the total charge. I then plugged that charge into the formula. Can't seem to get the right answer.