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## Homework Statement

The drawing shows three point charges fixed in place. The charge at the coordinate origin has a?

q1 = +8.50 µC; the other two have identical magnitudes, but opposite signs: q2 = -5.00 µC and q3 = +5.00 µC.

http://img66.imageshack.us/my.php?image=p1818mv9.gif

(a) Determine the net force (magnitude and direction) exerted on q1 by the other two charges.

(b) If q1 had a mass of 1.50 g and it were free to move what would be its acceleration?

## Homework Equations

F

_{12}=k|q

_{1}||q

_{2}|/r

^{2}

F

_{13}=k|q

_{1}||q

_{2}|/r

^{2}

## The Attempt at a Solution

F

_{12}= +2.128*10

^{23}

F

_{13}= -+2.128*10

^{23}

cos(23°)= F

_{x}/+2.13*10^23

F

_{x}= 1.96*10

^{23}

cos(23°)= F

_{y}/-2.13*10^23

F

_{y}= -1.77 *10

^{46}

Before I go any further, I wanted to make sure I am doing this right since I am kind of rusty. If anyone could check, it would be greatly appreciated.

Thanks in advance!