- #1

pcleary

- 9

- 0

## Homework Statement

Charge A is +2C and is located at <4,0,0>

Charge B is +12.5C and is located at <0,-3,0>

What is the the Force(AonB)

What is the magnitude of F(AonB)

## Homework Equations

F = (k)(Qa)(Qb)/(r^2) (r^)

For reference the answers are

< -0.8k, 0.6k, 0 > N (F vector)

and

1k N (magnitude)

## The Attempt at a Solution

So I am confused as to how to solve this problem. I don't know if maybe it is worded strangely or what but I am not getting those answers.

I did a lot of these problems but not with vectors. How do you apply the answer you get into a vector. The equation is given as r(hat) after the regular F equation. Does this mean I distribute my answer into i+j+k? I am assuming the answer to that is no because that makes no sense mathematically.

This is not a homework problem it is a practice problem. I am trying to learn physics and would really appreciate if someone could explain how you apply your F into vector notation and how this particular problem can be solved so I can learn. I am sure it is something simple that I am just not getting and my teacher didn't explain properly (in class we never did any with vectors).