Problem. $2.(30$ pts$)$ A composite wall is composed of two solide. Sandwichad between the two

walls is a foil heater of negligible thickness. The foit heater has an inteflace texpecature, in mut

supplies a heat flux of $q_x=1000\frac{W}{m^2}.$ The lett wall surface is insulated, wnd the nigth wall

surface is exposed to convection. The heat transfor is one$-$dimensival, seaty, with no heat

generation, and contact resistance is negligble.

$($a$)$ Skech the equivatent thermal eircuit of the sydem and argers all ersicancer in tems of

relevani variables.

$($b$)$ Determine the left wall surface temperature $($T$)$

$($c$)$ Determine the right wall surfice temperature $($T$))$

Known variablex.

$L_1=0\mathrm{.}1m$

$L_1=0\mathrm{.}2m$

$h_1=1k=1\mathrm{.}2\frac{W}{m}K$

$T_1=200C$