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## Homework Statement

A metal sphere has a charge of +8.0 µC. What is the net charge after 9.00 *10^13 electrons have been placed on it?

## Homework Equations

q=Ne where q is the charge, N is the number of electrons, and e is given as 1.6*10^-19

## The Attempt at a Solution

Well the problem gives us a charge, q, and the N, number of electrons, so I figure somehow I need to use this equation. I am not sure where to start though, could someone get me started? Thanks!