Chapter 3, Problem 3.51P

The plane y = O separates two magnetic media. Medium $1\left(y<0\right)$ has ${\text{μ}}_{{\text{r}}_1}\text{=3}\text{.0}$ and medium $2\left(y>0\right)$ has ${\text{μ}}_{{\text{r}}_2}\text{=9}\text{.0}$. A sheet current $\text{K}=\left(1/{\text{μ}}_o\right){\text{a}}_x\text{A/m}$ exists at the interface, and ${\text{B}}_{\text{1}}=4.0{\text{a}}_y+6.0{\text{a}}_z{\text{Wb/m}}^{\text{2}}$ .(a) Find ${\text{B}}_2$ .(b) What angles do ${\text{B}}_1$ and ${\text{B}}_2$ make with a normal to the surface?