7. A thermally isolated system is made up of a hot piece of aluminum and a cold piece of copper, the aluminum and the copper are in thermal contact. The specific heat capacity of aluminum is more than double that of copper. Which object experiences the greater magnitude gain or loss of heat during the time the system takes to reach themal equilibrium? A) the aluminum B) the copper C) Neither, both experience the same sıze gain or loss of heat. D) It is impossible to tell without knowing the masses. Answer:

7. A thermally isolated system is made up of a hot piece of aluminum and a cold piece of copper, the aluminum and the copper are in thermal contact. The specific heat capacity of aluminum is more than double that of copper. Which object experiences the greater magnitude gain or loss of heat during the time the system takes to reach themal equilibrium? A) the aluminum B) the copper C) Neither, both experience the same sıze gain or loss of heat. D) It is impossible to tell without knowing the masses. Answer:

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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VeLTE OMANTEL A:11 1 I* ON 4G a "ll "lll B/s oredoo Copper 0.087 Aluminium 0.250 Brass 0.180 Conclusion: 1. The specific heat of a material depends on the type of + and is a constant. 2. If the specific heat capacity of the material is high then, the material takes time to heat up and cool down. 3. If the material that has low specific heat, it will take energy to change its temperature. Finish attempt ... Homework 1 (SCL) Section 13 (Dr. Preethy)
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4) A ground source heat pump heats a building by extracting heat from the ground and pumping it into the building. Define: Qc = heat extracted from the ground, Qn= heat pumped into the building, W = electric energy used by the heat pump, Tc= temperature of the ground, T = temperature of building (Qc, Qn, and W are positive by definition). Assume Tr > Tc. a) Draw a diagram showing energy flow in and out of the heat pump. b) Write a general expression for the change AS in the entropy of the "universe", that is the heat pump plus the cold and hot reservoirs, in terms of the quantities defined above. Now assume ideal (reversible) operation, and take Te= 10 °C and Tp= 20 °C. What is the coefficient of performance (ČOP) of the heat pump? By what factor would this change if we had Tc = 0 °C instead?
6
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PROBLEM 6 A blacksmith heats a copper work-piece to 800°C and then quenches it using water.The work-piece has a mass of 5.0 kg and has been immersed in a vessel containing 200 L of water at initial temperature of 20°C. Assume the vessel is perfectly insulated, and the specific heat of copper and water are 0.385 kJ kg–1K–1 and 4.18 kJ kg–1K–1 respectively. (a) Calculate the final temperature of the copper work-piece. (b) Calculate the change in internal energy of the work-piece between the initial and final states.
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