The phase difference between E(z,t) and H(z,t) vanishes when ___________

The phase difference between E(z,t) and H(z,t) vanishes when ___________ Select one:a. some conductivity is observed in the dielectric medium.  b. moisture is present in the atmosphere.c. phase constant is zerod. conductivity is zero.

What is the phase relationship between the following set if v(t) = 8sin(ωt+50°) and i(t) =  6sin(ωt-20°)?

The wave function with a time period of 2π seconds, initial phase of (π/3) and amplitude of 50 meter can be represented by which of the following relations? (z,t) = 50 sin(kz - t) + π/3 (z,t) = 50 sin(z - kt) +π/3 (z,t) = π/3 sin(z - t) + 50 (z,t) = π/3 sin(k - t) + 50

Given a system with poles at 0.01 Hz, 1 Hz, and 80 Hz; zeros at 5 Hz, 100 Hz and 200 Hz, the approximate phase of the system response at 20 Hz is

What is the phase difference between the e and i waveforms? (write your answer in degrees to two decimal points)