A big fireplace can be approximated as 1.5 m3 of volume. It's made of firebrick with properties: ? = 2,600 kg/m3 and c = 950 kJ/kg-C. It is subjected to 50 MW average of radiation and convection heat transfer from the fire over a 2 hour period. Assuming all the brick is at a constant temperature and no heat transfer on the other side (both not really the case), what is the brick's final temperature if it was initially at room T (20 C).