An insulating material with a thermal conductivity of 0.18W/mK is used between two square plates 20cm apart. The smaller of the two square plates is 4cm by 4cm and is held at 20C, and the larger one is 8cm by 8cm and held at 150C, as shown in the figure below. If the other four sides are completely insulated, what is the heat flux through the insulating material in the x direction at steady state? x What is the heat flux at x1=0cm and x2=20cm ? What is the heat transferred at x1=0cm and x2=20cm ? Determine T(x)