Wall #$1$

Wall #$2$

$($hot$)$

$($cold$)$

Two insulated metal bars are of rectangular cross$-$section with sides $2\mathrm{.}00$ cm and $3\mathrm{.}70$ cm and also have a length of $4\mathrm{.}60$ cm $.$ The bars are wedged between two walls, one held at $94\mathrm{.}80$ degrees Celsius and the other at $0$ degrees Celsius $($see figure$).$ Metal $1$ is lead and metal $2$ is silver. Find the total thermal current in W $.$ w