An aluminium vessel of mass 0.5 kg contains 0.2 kg of water at 20∘C. A block of iron of mass 0.2 kg at 100∘C is gently put into the water. Find the equilibrium temperature of the mixture. Specific heat capacities of aluminium, iron and water are 910 Kg−1K−1470 J kg−1K−1 and 4200 J kg−1K−1 respectively.

An aluminium vessel of mass 0.5 kg contains 0.2 kg of water at 20∘C.

1.	An aluminium vessel of mass 0.5 kg contains 0.2 kg of water at 20∘C. A block of iron of mass 0.2 kg at 100∘C is gently put into the water. Find the equilibrium temperature of the mixture. Specific heat capacities of aluminium, iron and water are 910 Kg−1K−1470 J kg−1K−1 and 4200 J kg−1K−1 respectively.
Answer» An aluminium vessel of mass 0.5 kg contains 0.2 kg of water at $20^{\circ} C$ . A block of iron of mass 0.2 kg at $100^{\circ} C$ is gently put into the water. Find the equilibrium temperature of the mixture. Specific heat capacities of aluminium, iron and water are $910 K g^{- 1} K^{- 1} 470 J k g^{- 1} K^{- 1}$ and $4200 J k g^{- 1} K^{- 1}$ respectively.

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