Consider the solid sphere as radioactive wastes $($k$\_($rw$)=20($W$)/($m$)$K$),$ which are stored in a spherical, stainless$-$steel

container r$\_($i$)=0\mathrm{.}5$m and r$\_($o$)=0\mathrm{.}6$m$.$ The volumetric

heat generation is uniform at q$^()=10^(5)($W$)/($m$^(3)).$ The outer surface of the container is exposed to a water flow for which

h$=1000($W$)/($m$^(2))$K$,$ and T$\_(\backslash$infty $)=25\backslash$deg C$.$

a