A certain amount of heat is added to a mass of aluminum, and its temperature is raised 57 o Suppose that the same amount of heat is added to the same mass of copper. How much does the temperature of copper rise?
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A certain amount of heat is added to a mass of aluminum, and its temperature is raised 57 o Suppose that the same amount of heat is added to the same mass of copper. How much does the temperature of copper rise?
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- Which of the following is not true of thermal equilibrium? OIf two objects are both in thermal equilibrium with a third object, they have the same temperature. OTwo objects in thermal equilibrium are at the same temperature. O Temperature continues to change, but in an oscillatory fashion. OTwo objects in thermal equilibrium must be in thermal contact with one another.Suppose 1.00 kg of water at 38.5° C is placed in contact with 1.00 kg of water at 21° C. What is the change in energy (in joules) of the hot water due to the heat transfer when it is placed in contact with the cold water and allowed to reach equilibrium? OnAn eager scientist on a hot summer day needs to determine how much ice to buy. She has a cooler which is filled with 34 cans of soda at a temperature of 87.7°F. Each can has a mass of 384 g. The scientist wants the temperature of the drinks to be 40.8°F. If there is no heat lost by the cooler and ignoring any heat lost to the soda containers, what mass m;ce of ice needs must she add to her cooler? Assume the temperature of the ice is 32.0 °F. The latent heat of fusion for ice is 80.0 cal/g, the specific heat of water is 1.00 cal/g.°C, the specific heat of the soda is 0.900 cal/g.°C, and there are 454 grams per pound. 0.218 Mice lbs Incorrect II
- (a) Suppose you start a workout on a Stairmaster, producing power at the same rate as climbing 116 stairs per minute. Assuming your mass is 76.0 kg and your efficiency is 20.0 how long will it take for your body temperature to rise 1.00ºC if all other forms of heat transfer in and out of your body are balanced? (b) Is this consistent with your experience in getting warm while exercising?A heat of transformation of a substance is: O the same as the specific heat O the same as the heat capacity O the energy per unit mass absorbed as heat during a phase transformation O the energy absorbed as heat during a phase transformation O the same as the molar specific heat eTextbook and Media Save for LaterConsider the change in the internal energy of a system. -What is the change in the internal energy, in joules, of a system that does 4.725 × 105 J of work, while 3.2 × 106 J of heat is transferred into the system and 7.8 × 106 J of heat is transferred from the system to the environment?
- (a) How.much heat transfer is required to raise the temperature of a 0.800-kg aluminum pot containing 3.50 kg of water from 25.0°C to the boiling point and then boil away 0.650 kg of water? kcal (b) How long does this take if the rate of heat transfer is 550 W (1 watt = 1 joule/second (1 W = 1 J/s))? Additional Materials O Reading1. What is the change in internal energy of a system when a total of 150.00 J of heat transfer occurs out of (from) the system and 159.00 J of work is done on the system? (See image below) W = - 159 J System 159 J in 150 J out Qout = - 150J AU = Q - W = - 150 J - (-159 J) = +9JH₂O has a much higher latent heat of vaporization than latent heat of fusion. Therefore, Ice at 0° C will require (fill in the blank), heat to convert it to 0° C water, than 100° C water would take to convert to 1000 C steam. O more O less O Cannot be determined with this information O the same amount of
- You have left a fork in a very hot pan. Isit better for the fork to be made of (a) a material that is high-thermal-conductivity, (b) a material that low-thermal- conductivity, or (c) either one of these types can be used a) a O b) b c) сSix grams of liquid X at 35 degrees Celsius are added to 3 grams of liquid Y at 20 degrees Celsius. The specific heat of liquid X is 2 calories per gram per degrees Celsius, and the specific heat of liquid Y is 1 calorie per gram per degree Celsius. Now imagine that liquid X continues to transfer energy to liquid Y 12 calories at a time. How many total transfers would be required to reach a common temperature? 04 O more than S 02On a trip, you notice that a 5.30-kg bag of ice lasts an average of one day in your cooler. What is the average power in watts entering the ice if it starts at 0°C and completely melts to 0°C water in exactly 24 hours (1 Watt-1 Joule/second and Latent heat of fusion of water is 334 kJ/kg and latent heat of vaporisation of water is 2256 kJ/kg) O A. 20.49 W O B. 1770 W ○ C. 20.49 kW O D. None of the options provided is correct. O E. 78.44 W