Please help with this! PP$1)$ Sizing of a wall insulation $($Incropera ch$.3,$ One$-$dimensional, Steady State Conduction$)$ A wall of a house is constructed of $5$ layers of different structures: $($i$)$ plasterboard $($l $=0\mathrm{.}012$ m$,$ k $=0\mathrm{.}23$W$/($m K$))($ii$)$ rock wool layer $($k $=0\mathrm{.}045$W$/($m K$))($iii$)$ wind shield $($l $=0\mathrm{.}02$ m$,$ k $=0\mathrm{.}09$W$/($m K$))($iv$)$ air gap $($l $=0\mathrm{.}015$ m$)($v$)$ brick layer $($l $=0\mathrm{.}08$ m$,$ k $=0\mathrm{.}7$W$/($m K$))$ The indoor air is Ti $=21$C and the heat transfer coefficient of the inner surface is hi $=5$W$/($m$2$ K$).$ The outdoor air is To $=30$C and the heat transfer coefficient of the outer surface is ho $=15$W$/($m$2$ K$).$ The heat transfer coefficient on both surfaces of the air gap is hg $=10$W$/($m$2$ K$).$ The indoor wall surface temperature is Ts$,$i $=17$C and the wall is at steady state. $($a$)$ Calculate the heat flux through the wall $($b$)$ Calculate the needed thickness of the rock wool layer $($c$)$ Plot the temperature distribution through the wall

Please notice that the brick wall is against the outdoor temperature!