anonymous
  • anonymous
Assume from electricity the following equations which are valid in free space. (They are called Maxwell equations)
Linear Algebra
  • Stacey Warren - Expert brainly.com
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chestercat
  • chestercat
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
anonymous
  • anonymous
\(\nabla . \bar E = 0 \) \(\nabla . \bar H = 0 \) \(\nabla \times \bar E=-\mu (\frac{ \delta \bar H }{ \delta t }\)) \(\nabla \times \bar E=-\epsilon (\frac{ \delta \bar E }{ \delta t }\)) from them show that any component of \(\ \bar E\) or \(\ \bar H \) satisfies the wave equation with \(\ v = (\epsilon \mu )^{-1/2}\). Hint: use vector identity!
anonymous
  • anonymous
have idea @CarlosGP ????
anonymous
  • anonymous
Yes. I have. You should start by correcting the fourth equation. The right one is: \[\nabla \times H=\epsilon \frac{ \delta E }{ \delta t } \] How to obtain the wave equation from this particular case of Maxwell equations, can be found in any book of Electromagnetism

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anonymous
  • anonymous
@CarlosGP and then what should i do ??
anonymous
  • anonymous
Where are you getting these \[\frac{ \delta^{2} E }{ \delta^{2}t } = - \omega ^{2} E_{s} \] ????
anonymous
  • anonymous
then for Ey \[E_{ys} = E_{ys} (x) \rightarrow \frac{ \delta^{2}E_{ys} (x) }{ \delta z^{2} } =0 ; \frac{ \delta^{2}E_{ys}(x) }{ \delta y^{2} }=0 \] \[\frac{ \delta^{2}E_{ys} (x) }{ \delta x^{2} } + \left( \frac{ \omega }{ v } \right)^{2} E_{ys} = 0\] and for z \[E_{zs} = E_{zs} (x) \rightarrow \frac{ \delta^{2} E_{zs}(x) }{ \delta z^{2} }=0 ; \frac{ \delta^{2}E_{zs}(x) }{ \delta y^{2} }=0\] \[\frac{ \delta^{2} E_{zs} (x) }{ \delta x^{2} } + \left( \frac{ \omega }{ v } \right)^{2} E_{zs} =0\] correct me if i wrong.., :)
anonymous
  • anonymous
Hi @BAdhi
BAdhi
  • BAdhi
we assume that E field is time harmonic, i.e. $$E=E_0e^{j\omega t}\implies \frac{d^2E}{dt^2}=-\omega^2E_0e^{j\omega t}=-\omega^2E$$
anonymous
  • anonymous
cool @BAdhi ..., then.., what's the next? would you like to check my work above before you?
anonymous
  • anonymous
hi @Jonask nice to meet you :)
anonymous
  • anonymous
nice to meet you too are you taking electrıcty wıth edx
anonymous
  • anonymous
no i'm not.., i'm taking 2.01x Elements of Structures
anonymous
  • anonymous
@Jonask , would you like to check my work above??
anonymous
  • anonymous
not famılıar wıth these sorry
perl
  • perl
whats elements of structures?

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