I'm stuck on a Electrostatic problem which I just don't seem to get.(adsbygoogle = window.adsbygoogle || []).push({});

The left-hand sphere has a positive charge Q and the right-hand sphere has a negative charge -Q. Charge is distibuted uniformly over each of two spherical volumes with radius . One sphere of charge is centered at the origin and the other at x = 2R

Find the magnitude of the net electric field at the point on the x-axis.

I did the first part already where it wanted the field at the orgin which was simple:

Q/(4*pi*epislon_0*(2R)^2)

but if I try the same method for this one it doesn't seem to work. I wanted to add them together I tried:

Q/(4*pi*epislon_0*(.5R)^2) + Q/(4*pi*epislon_0*(3R/2)^2)

but doesn't like it.

Thanks

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

Dismiss Notice

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!

# Homework Help: Electrostatics drivng me nuts

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