(a) 60 Hz|(b) 1 kHz(c) 1 MHz|(d) 1 GHz 7.18 Dry soil is characterized by & = 2.5, µ, = 1, and o = 10¬4 (S/m). At each of the

following frequencies, deter-mine if dry soil may be considered a good conductor, a quasi-conductor, or a low-loss dielectric. Then calculate a, ß, 2, .and NC