Transcribed Image Text: a. Write down an E(z,t) and a B(z,t) travelling wave of an EM wave in terms of k and w. What are

Transcribed Image Text: a. Write down an E(z,t) and a B(z,t) travelling wave of an EM wave in
terms of k and w. What are these constants and the speed of the
wave in terms of the wavelength A and the frequency f of the
wave?
b. What are the energy densities stored in an electric and a magnetic
field?
c. What is the total instantaneous energy stored per unit volume in a
region of space where there is an EM wave? Seeing that that e =
express this in terms of the B- field.
d. Express the Poynting vector in terms of the B- field.
e. What is the time averaged Poynting vector in terms of Eo or Bo (in
terms of Ems or Bms). What is the intensity / of the wave?

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