- #1
cosine
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- 0
Here is a detail that makes me doubt:
I am given the equation for a standing wave with a dependence in 't' and 'z' only... I am told that the wave is propagating in a confined space (2*2*2) m
Q1. Calculate the energy density for n=1,2,3. I didn't have any pb with this.
Q2. Calculate the total energy for n=1,2,3. (!)
Ok, I can't find anything in my lecture notes about total energy for waves. So I went back to the definition of energy density (h) which the amount of energy per unit of volume.
Therefore if I multiply the volume by h I should get the energy (right?)
The volume here is 8 m^3 BUT since the wave in question is only in 1 direction (z) do I still have to multiply by V or only by L=2m instead (for this particular case)
Thanks for your answer(s)
Homework Statement
I am given the equation for a standing wave with a dependence in 't' and 'z' only... I am told that the wave is propagating in a confined space (2*2*2) m
Q1. Calculate the energy density for n=1,2,3. I didn't have any pb with this.
Q2. Calculate the total energy for n=1,2,3. (!)
Homework Equations
The Attempt at a Solution
Ok, I can't find anything in my lecture notes about total energy for waves. So I went back to the definition of energy density (h) which the amount of energy per unit of volume.
Therefore if I multiply the volume by h I should get the energy (right?)
The volume here is 8 m^3 BUT since the wave in question is only in 1 direction (z) do I still have to multiply by V or only by L=2m instead (for this particular case)
Thanks for your answer(s)