Two parallel wires of radius a = 0.1mm and length 2cm separated by a distance d =1mm connect two elements on the motherboard of a computer. the wires are assumed to be made of perfect electric conductors and reside in a lossless medium with permittivity 0 ε = 2ε and permeability μ0 . a) consider two signals: one of frequency 1 ghz and the other of frequency 20 ghz. do we have to consider the two wires as a transmission line for the first signal? do we have to consider the two wires as a transmission line for the second signal? b) in the case we have to consider the wires as a transmission line, what are the characteristic impedance and propagation constant of the line?