Electric flux through a multihedral face

[JJones_86]

Homework Statement

An object with a charge of 0.920 C is placed at the center of a regular tetrahedron with 4 equivalent surfaces. What is the electric flux through one surface of the tetrahedron?

Homework Equations

For an n-sided polygon

Electric Flux = Charge / (n)(Eo)

The Attempt at a Solution

No idea, I am lost on this one...

 

[Delphi51]

Think of the tetrahedron surface enclosing the charge. You can easily calculate the total flux through the whole surface using your formula.

Now, what fraction of that will go through one face of the tetrahedron? Note: be sure you know what a "regular" tetrahedron is.

 

[JJones_86]

Think of the tetrahedron surface enclosing the charge. You can easily calculate the total flux through the whole surface using your formula.

Now, what fraction of that will go through one face of the tetrahedron? Note: be sure you know what a "regular" tetrahedron is.

I'm just lost on what Eo is?

 

[Delphi51]

Eo in Gauss' law is supposed to be written epsilon sub zero, the permittivity of free space.
It is 8.85 x 10^-12 farad/meter.
Check it out at http://en.wikipedia.org/wiki/Electric_constant
They have other names for it and several variations on the units that could be useful to you here.

 

[JJones_86]

Eo in Gauss' law is supposed to be written epsilon sub zero, the permittivity of free space.
It is 8.85 x 10^-12 farad/meter.
Check it out at http://en.wikipedia.org/wiki/Electric_constant
They have other names for it and several variations on the units that could be useful to you here.

Hey thanks man, my professor failed to tell us that and its not in this useless pc textbook. I appreciate it!

 

[JJones_86]

so should it be 0.92C/4(8.85x10^-12) = 2.59887e10?