- #1
jedjj
- 26
- 0
Homework Statement
In the figure, particle 1 of charge +1.0 µC and particle 2 of charge -2.5 µC, are held at separation L = 7.0 cm on an x axis. If particle 3 of unknown charge q3 is to be located such that the net electrostatic force on it from particles 1 and 2 is zero, what must be the coordinates of particle 3?
x = ? cm
y = ? cm
the figure is not necessary for the question if you know that particle 2 is to the right of particle 1.
Homework Equations
[tex]F=\frac{kq_1q_2}{d^2}[/tex]
[tex]k=8.99\times10^{9}[/tex]
The Attempt at a Solution
Because both particles are on the x axis, to net zero force it must be on the x axis, therefore the y value is 0, and that is correct. I have attempted to use my force equation and found the value as 4.592N(in the negative direction), but that doesn't tell me anything. I also realize that the negative charge is stronger so particle 3 is going to be to the left of the two particles.
Without knowing the charge on particle 3 how can I find this distance?
Thank you in advance.