Problem 2 (20 points): For the block shown in the figure below, let the left, bottom, and right sides be maintained at a constant temperature of T, (i.e., T=T=T=T=Ts=Ts=T9=T12=T, K). The top surface areas (in thick lines) are exposed to a convection environment with an ambient temperature at T. (K) and heat transfer coefficient of h (W/mK) and the dashed area is perfectly insulated. Assume that the system has internal heat generation at a rate per volume of q' (W/m), and that Ax = Ay. Derive the finite difference equation for node 10, and fully simplify the equation. 13 T. Th 9 10 11 12 5 2 8