PHYS_42_Exam_2

# PHYS_42_Exam_2 - LOS MEDANOS COLLEGE Solu~h c n s PHYS42...

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Unformatted text preview: LOS MEDANOS COLLEGE Solu~h ( ' c n s PHYS42 Spring 2010 Exam 2 Conceptual: 1. Which of the following is a state function? (a) entropy (b) work (c) internal energy (djheat ^e))more than one of the above 2. When a vapor condenses into a liquid. (a) its temperature increases (b) its temperature decreases it absorbs heat it gives offbeat 3. A Carnot engine is independent of the working substance. (Tractor False 4. The rate of heat flow through a solid slab of material does not depend upon the (a) temperature difference between the opposite faces of the slab (b) slab thickness ((cj) specific heat of the slab (d) cross-sectional are of the slab (e) thermal conductivity of the slab (f) none of the above 5. Consider the following processes: (a) Heat flows from a hot object to a colder object (b) Work is done on a system and an equivalent amount of heat is expelled by the system, fc) Heat is absorbed by the system and an equivalent amount of work is done by the system. Which of the above are never found to occur? i. Only a ii. Onlyb (2ID Onlyc iv. Onlyb and c v, a, b and c 6. If to objects are in thermal equilibrium with each other: (a) they cannot be moving (b) they cannot be undergoing an elastic collision (c) they cannot have different pressures (£dj) they cannot be a different temperatures (e) they cannot be falling in Earth's gravitational field LOS MEDANOS COLLEGE S o J tA PHYS42 Spring 2010 Exam 2 7. The internal energy of an ideal gas depends on (|a}?the temperature only (b) the pressure only (c) the volume only (d) the temperature and pressure only (e) temperature, pressure, and volume 8. State the ideal gas law and identify each of the variables involved....
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## This note was uploaded on 08/30/2010 for the course PHYS physics 13 taught by Professor Wilhelm during the Spring '10 term at Diablo Valley College.

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PHYS_42_Exam_2 - LOS MEDANOS COLLEGE Solu~h c n s PHYS42...

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