A plane monochromatic electromagnetic wave with wavelength λ = 3.2 cm, propagates through a vacuum. Its magnetic field is described by
B⃗ =(Bxi^+Byj^)cos(kz+ωt)B→=(Bxi^+Byj^)cos(kz+ωt)
where Bx = 3.6 X 10-6 T,
By = 4.4 X 10-6 T, and i-hat and
j-hat are the unit vectors in the +x and +y directions,
respectively.
1)What is f, the frequency of this wave?
2)What is I, the intensity of this wave?
3)What is Sz, the z-component of the Poynting vector
at (x = 0, y = 0, z = 0) at t = 0?
4)What is Ex, the x-component of the electric field at (x = 0, y = 0, z = 0) at t = 0?
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