Coulomb's law and drawing vectors

[spastic3]

Homework Statement

Three charges are on the x~axis about five cm apart. Charge A is three micro C, charge B is negative four micro C, and charge C is five micro C. What is the effect on B?

Homework Equations

I have no idea how to solve this or the formula involved.

The Attempt at a Solution

Completely clueless, just would like to know how to solve it.

 

[dontdisturbmycircles]

Coulomb's law. Draw the force vectors calculated for both $$F_{a->b}$$ and $$F_{c->b}$$.

$$F_{e}=\frac{Kq_{1}q_{2}}{r^{2}}$$

 

[spastic3]

sorry I'm lost, i have no idea how to implement that. what are force vectors?

 

[dontdisturbmycircles]

Its ok. Did you draw a diagram? Start by drawing a diagram. I am assuming that A is on the left of B and B is on the left of C, right?

Does A exert a force to the left or the right on B?

How about C, does it exert a force to the left or the right on B?

 

[dontdisturbmycircles]

Hint: think opposites attract.. Which of the charges are positively charged? Which are negatively charged?

 

[spastic3]

how do you draw the diagram? I'm completely confused, you're talking to me in riddles. do you know of a website that shows step by step how to work these type of problems?