A rectangular wave guide has dimensions a = 6 cm and b = 2 cm. At...
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A rectangular wave guide has dimensions a = 6 cm and b = 2 cm. At what frequency for the TE mode in the waveguide the group velocity is 90 percent of the phase velocity. A rectangular wave guide has dimensions a = 6 cm and b = 2 cm. At what frequency for the TE mode in the waveguide the group velocity is 90 percent of the phase velocity.
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