Hello everyone. I need to see if I did this right. the problem is this:(adsbygoogle = window.adsbygoogle || []).push({});

Particle 1 of charge 1.0E-6 C and particle 2 of charge -2.0E-6 C are held at seperation L = 13.0cm on an x axis. If particle 3 of unkonwn charge q3 is to be located such that the net electrostatifc force on it from particles 1 and 2 is zero what must be the coordinates of particle 3?

Here is my drawing and work:

http://img231.imageshack.us/img231/2886/quad5nx.jpg [Broken]

So would the answer be X = 31.385 cm Y = 0 cm?

Also another quick question...

http://img76.imageshack.us/img76/510/22115ph.gif [Broken] shows four situations in which charged particles are fixed in place on an axis.

In which situations is there a point to the left of the particles where an electron will be in equilibrium? (Select all that apply.)

situation b and a were the only ones that made senes to me. Does that seem right?

Thanks!!

**Physics Forums | Science Articles, Homework Help, Discussion**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Charge problem, used a quadtratic equation, can you see if i did it right?

**Physics Forums | Science Articles, Homework Help, Discussion**