PLEASE PROVIDE FULL CALCULATIONS

A plane wave propagating through a medium with ${}_r=8,{}_r=2,$ has $\frac{?}{\text{b}\text{a}\text{r}}(E)(z)=0\mathrm{.}5e^{-\frac{z}{3}}sin({10}^{8}t-z)hat(a{)}_x.$ Determine,

a$)$ The loss tangent,

b$)$ The phase constant,

c$)$ The phase velocity,

d$)$ The intrinsic impedance,

e$)$ The magnetic field intensity,

f$)$ The time average power per unit area.