Posted by **Stephanie13** on Friday, July 6, 2012 at 10:38pm.

particle 1 of charge q1 = 1.04 ìC and particle 2 of charge q2 = -2.99 ìC, are held at separation L = 10.8 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 (a)x and (b)y coordinates of particle 3?

- College Physics -
**Elena**, Saturday, July 7, 2012 at 5:17am
The point where electric field is zero may be either to the left from q1 or to the right from q2; y-coordinate of the ‘zero point’ is zero.

Let ‘x’ be the distance to the “zero point” located to the left from q1. Then

E1=k•q1/x², (the field deiected to the left)

E2=k•q2/(10.8+x)² ,(to the right)

E1=E2

k•q1/x²= k•q2/(10.8+x)²

1.04/ x² = 2.99/(10.8+x)².

Solve for “x”

I obtained x1=18.35 cm and x2=-15.64 cm . Check my calculations

## Answer This Question

## Related Questions

- Physics - Figure (a) shows charged particles 1 and 2 that are fixed in place on ...
- Physics - Figure (a) shows charged particles 1 and 2 that are fixed in place on ...
- physics - Two particles are fixed on an x axis. Particle 1 of charge 47.9 μ...
- physics - One particle has a mass of 2.86 x 10-3 kg and a charge of +7.32 μ...
- College Physics - Two equally charged particles, held 2.8 x 10-3 m apart, are ...
- Physics - Three charged particles form a triangle: particle 1 with charge Q1 = ...
- College Physics - Two particles are fixed to an x axis: particle 1 of charge q1...
- Physics - Particle A of charge 2.76 10-4 C is at the origin, particle B of ...
- College Physics - Two particles are fixed to an x axis: particle 1 of charge -7....
- physics - Two particles, with identical positive charges and a separation of 2....

More Related Questions