A 6-m section of 150-Ω lossless line is driven by a source with vg (t) = 5 cos 8π × 107 t − 30◦ (V) and Zg = 150 Ω. If the line, which has a relative permittivity r = 2.25, is terminated in a load ZL = 150 − j50 Ω, find the following:

(a) λ on the line.
(b) The reflection coefficient at the load.
(c) The input impedance.
(d) The input voltage Vi .
(e) The time-domain input voltage vi (t).