AT a production facility, 1.2 in thick, 2 ft x 2 ft, square brass plates( Denisty=532.5 lbm/ft^3 and Cp= 0.091 btu/lbm*F) that are initally at a uniform temperature of 75F are heated by passing them through an oven @ 1300 F at a rate of 300 per min. If the plates remain in the oven until there average temp rises to 1000F, determine the rate of heat transfer to the plates in the furnace.