- #1

- 69

- 0

## Homework Statement

A rod of length 25 cm has a uniform linear charge density of 7 μC/m. Determine the Electric Field at a point P located at a perpendicular distance 69 cm along a line of symmetry of the rod.

## Homework Equations

E=k*charge density(integral(dx/(d^2+x^2)^3/2)

## The Attempt at a Solution

x=.69tan(theta)

dx=(.69)sec^2(theta)dtheata

Thus,

.125=pi/18

Hence, I have found

=(9*10^9)*(7*10^-6)*2.1004*(sin(pi/18)-sin(-pi/18))

My final answer is 45956.1 but it's wrong.

Thank you for any input at all. Also, I'm not sure what mode is my calculator suppose to be on.