Finding Electric & Magnetic Field Energy Densities in a Dielectric Medium

[robert25pl]

If current densities are given in a perfect dielectric medium having $$\epsilon , \mu$$
I have to find the power dissipated per unit volume, the electric field energy density, and the magnetic field energy density everywhere.
Can I get help with equations?

 

[maverick280857]

These are standard equations (outcomes of electromagnetic theory) and you should be able to find them even in a basic treatment of electromagnetic waves (for example, in books like Krane, Sears/Zemansky, etc). You could even search on google.com. What is your specific trouble with them?

 

[robert25pl]

Given
$$E=J_{so}cos(\omega t-\beta z) \vec{i}$$
and
$$H=\frac{J_{so}}{2}cos(\omega t-\beta z) \vec{j}$$

I have to find power flow density vector(this i know is a P=ExH pointing vector the power)
the dissipated per unit volume, the electric field energy density, and the magnetic field energy density everywhere.

 

[robert25pl]

Any help with this problem. Its due today. Thanks

 

[maverick280857]

You'd better read this first:

http://scienceworld.wolfram.com/physics/EnergyDensity.html

http://scienceworld.wolfram.com/physics/MagneticFieldEnergyDensity.html