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Q. If 40 g of hot water at 60°C is poured into a cavity in a very large block of ice at 0°C, what will be the final temperature of the water in the cavity?

Q. A tennis racket has nylon strings. If one of the strings with a diameter of 1.0 mm is under a tension of 15 N, how much is it lengthened from its original lenght of 40 cm?

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