A copper block at is dropped into of water at inside an insulated cup so that no…

PHYSICS · Subjective · CBSE · Physics · Thermal Properties of Matter · Thermal Properties of Matter

Problem

200\,\text{g}

copper block at

150^{\circ}\text{C}

is dropped into

500\,\text{g}

of water at

25^{\circ}\text{C}

inside an insulated cup so that no energy enters or leaves the combined system. The specific heat capacities are

c_{\text{Cu}} = 0.39\,\text{J}\,\text{g}^{-1}\,^{\circ}\text{C}^{-1}

and

c_{\text{water}} = 4.18\,\text{J}\,\text{g}^{-1}\,^{\circ}\text{C}^{-1}

. Determine the approximate final equilibrium temperature of the system.