Exam 4 Example Questions

Exam 4 Example Questions - Example Exam 4 These questions...

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Example Exam 4 -1- These questions are similar to ones that might appear on the fourth exam. They will be discussed in the Tuesday recitation prior to the exam. There will be 20 questions on the exam. 1. A piece of aluminum, which has a thermal expansion coefficient of 2.3 × 10 5 1 , is 3.0000 cm long. It’s temperature is changed by 100 C°. What is it’s new length? (a) 2.9931 cm (b) 3.0000 cm (c) 3.0023 cm (d) 3.0069 cm 2. Consider placing two, not-necessarily-identical, objects into contact. Thermal equilibrium between the two objects is characterized by (a) both objects have the same temperature. (b) both objects having the same internal energy. (c) both objects having the same temperature and internal energy. (d) both objects having the same internal energy but not the same temperature. 3. A 7 kg aluminum cylinder at 20 ºC is placed in contact with a 1 kg aluminum cylinder at 100 ºC. The two cylinders are isolated from the outside world. What is the final equilibrium temperature of the two cylinders? (a) 20 ºC (b) 30 ºC (c) 60 ºC (d) 90 ºC 4. From a macroscopic point of view, net transport of energy in heat diffusion is driven by a difference in temperature. In diffusion of particles the transport is driven by what macroscopic quantity? (a) a difference particle concentration (b) a difference in particle velocity (c) a difference in particle temperature (d) particle collisions 5. 2 Joules of heat is supplied to two different pieces (A and B) of aluminum. Piece A has twice the mass
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This note was uploaded on 03/26/2012 for the course PHY 1020 taught by Professor Kodera during the Fall '11 term at University of Florida.

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Exam 4 Example Questions - Example Exam 4 These questions...

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