- #1

jenzao

- 48

- 0

## Homework Statement

Consider three charges at the vertices of an equilateral triangle of side a = 7 cm. qA = +2 µC, qB = +2 µC, and qC = -1 µC. (see attached picture)

Find the x- and y- components of the electric force acting on qC

## Homework Equations

i am doing everything right, but getting wrong answer ?

## The Attempt at a Solution

x-comp cancel obviously, so I am left with finding y-comp...

F = kqAqC/r^2

= 2.571e-1

sin60(2.571e-1) = 2.2266e-1

multiply by 2 = 4.453e-1 N (this is wrong though)

i can't see the prob. The forces both point in positive y direction, so the y vectors sum

please help, thanks!