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10. A steel casting weighing 2kg has an initial temperature of 500C:40kg of water initially at 25C is contained in a perfectly insulated steel tank

10. A steel casting weighing 2kg has an initial temperature of 500C:40kg of water initially at 25C is contained in a perfectly insulated steel tank weighing 5kg. The casting is immersed in the water and the system is allowed to come to equilibrium. What is its final temperature? Ignore the effects of expansion or contraction, and assume constant specific heats of 4.18kJkg1K1 for water and 0.50kJkg1K1 for steel

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