1. Given 4 walls made of each of the following materials: - Urethane, two-part mixture, rigid foam. - Plywood. - Iron (pure). - Aluminum (pure). A. For 1-dimensional steady state

heat transfer with no heat source inside the walls, and a constant heat transfer rate q = 927 W in the positive x direction, determine the temperature gradient (dT/dx) in each of the walls. Assume k = constant, and can be looked up at 300 K. The left surface of the wall at x = 0 is at T= 62 °C. The wall is 1.85 m tall by 3.19 m wide. B. If each of the walls is 1.3 cm thick, what is the surface temperature on the right side of each wall at x = 1.3 cm for each of these four materials? C. For the wall made of these same four materials undergoing steady state heat transfer with q = 927 W, how thick must each wall be to have the temperature on the right side of the wall be 30 °C?