Q4. A composite wall, made up of four materials, is shown in figure below. The temperatures on the left and right faces are maintained at constant values of T =Thigh=200C and Ts Tlow 50C. Find the temperature distribution in the various materials of the wall using a linear finite element for each of the four materials. Data: t-5 mm, t2=10 mm, t3-15 mm, t4-8 mm, k1=0.4 W/mmC, k2=0.3 W/mmC, k3=0.2 W/mmC, k4=0.1 W/mmC Thigh KA K3 K 41213- 1 Tlow x