A certain nonmagnetic material has the material constantsεr = 2 andε′′/e′=4 × 10^-4 at ω =1.5Grad/s. Find the distance auniform plane wave can propagate through the material before
a. it is attenuated by 1 Np;
b. the power level is reduced byone-half;
c. the phase shifts 3600.