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Set 10- Heat Transfer

# Set 10- Heat Transfer - Sonia Rahangdale PHY 231 Fall 2006...

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Sonia Rahangdale - PHY 231 Fall 2006 1 Set 09 (11/14 midnight) Due on Tuesday, Nov 14 at 11:59 pm (EST) Temperature A block of aluminum with a mass of 5.8 kg is at 2 C and comes in contact with a hot block of copper with a mass of 11.6 kg at 69 C. What is the final temperature? c aluminum = 0.22 kcal/kg C c copper = 0.093 kcal/kg C Tries 0/12 Due on Tuesday, Nov 14 at 11:59 pm (EST) Time 2 An immersion heater has a power rating of 800 watts. It is used to heat water for coffee. How long (in minutes) should it take to bring 1.1 L of water from room temperature (20 C) to 81 C? Tries 0/12 Due date: Tue Nov 14 23:59:00 2006 Three different liquids are mixed together in a calorimeter. The masses of the liquids are: m 1 = 900 g, m 2 = 710 g, m 3 = 475 g. The specific heats are: c 1 = 200 J/kgC, c 2 = 580 J/kgC, c 3 = 815 J/kgC. The initial temperatures of the liquids are: T 1 = 30.0 C, T 2 = 54.0 C, T 3 = 83.0 C. What will be the temperature of the mixture in Celsius? (En- ter only a number without a unit.) Tries 0/12 If the heat necessary to warm 850 g of water from a tem- perature of T 1 = 11.0 C to T 2 = 87.0

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