Heat And Thermodynamics

An iron piece of mass \(200 \mathrm{~g}\) is kept inside a furnace for some time and then put in a calorimeter of water equivalent \(20 \mathrm{~g}\) containing \(230 \mathrm{~g}\) of water at \(20 \mathrm{C}\). The steady state temperature attained by the mixture is \(60^{\circ}\). The temperature of the furnace is (Specific heat capacity of iron is \(470 \mathrm{~J~kg}^{-1} \mathrm{C}^{-1}\) )