Two parallel ideally conducting walls located at a distance d from each other form a simple waveguide. The walls are parallel to the xz plane (figure). Find the possible types of waves Ex(z,y,t) of frequency w, propagating in such a waveguide along the z axis parallel to the walls of the waveguide, if the electric field is parallel to the x axis. What are the possible distributions of vibration amplitudes in sections z = const perpendicular to the waveguide axis? Find the phase speed of the waves. What is the relationship between wavelength and wavelength?

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