For problems 1 to 6 A material has ur=1, er=10 o=0.02 S/m at 20GHz 1.What kind of a lossy material is this 2.Find the attenuation constant a 3. Find the propagation constant b 4. Find the wavelength 5.Find the propagation velocity  6.Find the skin depth ds 7.An electromagnetic wave is propagating in a medium in the x direction. Magnitude of the electric field is measured as 12V/m at x=4m and it is measured as 8V/m at x=10m. Find the skin depth 8.The skin depth of a certain nonmagnetic conducting (good conductor) material is 3 pm at 2 GHz. Determine the phase velocity in this material 9.The magnetic field of a plane wave traveling in air is given by E = .250 cos (27r107 t = kz). Determine the average power density carried by the wave 10. A wave traveling in a lossless, nonmagnetic medium has an electric field amplitude of 24.56 V/m and an average power density of 2.4 W/m2. Determine the phase velocity of the wave.