Homework Statement
A charge lies on a string that is stretched along an x-axis from x = 0 to x = 3.00 m; the charge density on the string is a uniform 9.00 nC/m. Determine the magnitude of the electric field at x = 8.00 m on the x axis.
Homework Equations
\int_0^3 kλ/(8-x)^2\,dx...