# Magnitude and direction of charge

1. Jul 6, 2010

### flynostrich08

1. The problem statement, all variables and given/known data
Two charges q1 = 5μC and q2 = 10μC are located at x = 0 cm and 10 cm respectively. What
would the magnitude and direction of the force on a 2μC charge located at x = 5 cm be due to charges q1 and q2.

2. Relevant equations

3. The attempt at a solution
i don't know how to do this problem, i appreciate any help, thanks

2. Jul 6, 2010

### pgardn

You dont have any equations you have learned about force and static charges?

3. Jul 6, 2010

### flynostrich08

F=kq1q2/r^2 so do i find the force of each then subtract them? What do i do with each F i find?

i don't know any static charge equations.

4. Jul 6, 2010

### pgardn

What you have given above is the equation that says that two static charges q1 and q2 separated by a distance r, exert a force of F on each other. So why dont you start by determing the Force of the charge at the 0 cm mark on the charge that is in between, the 2uc charge.