## Essential University Physics: Volume 1 (4th Edition) Clone

We know that according to law of conservation of energy $Q_{water}=-Q_{iron}$ $\implies m_{water} c_{water}\Delta T_{water}=-m_{iron}c_{iron}\Delta T_{iron}$ We plug in the known values to obtain: $(15)(4184)(T_f-20)=(1.1)(447)(550-T_f)$ $T_f=24^{\circ}C$