Homework Question 5: Consider a cubic block whose sides are 5 cm long. The block is initially at 20°C and is made of granite (k = 2.5 W/m-K and a =

1.1 × 10-6 m²/s). The block is exposed to hot gases at 200°C in a furnace on all of the surfaces with a heat transfer coefficient of 50 W/m².K. Determine the center temperature of the block after 20 minutes. 5 cm 5 cm T₁= 20°C 5 cm List the references you used to solve the problem. Hot gases, 200°C