midterm2006solution - ME320 Midterm Exam Name: October 24,...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
ME320 Midterm Exam October 24, 2006 Name: Section: 1. Short questions (25 points) a. For a system to be in thermodynamic equilibrium, must the tem- perature and the pressure be the same everywhere? Solution: For a system to be in thermodynamic equilibrium, the tempera- ture has to be the same everywhere but the pressure can change. However, there should be no unbalanced pressure forces present. The increasing pressure with depth in a ±uid, for example, should be balanced by increasing weight. b. What is the physical signi²cance of the two constants that appear in the van der Waals equation of state? Solution: The constant a represents the increase in pressure as a result of attractive intermolecular forces; the constant b represents the volume occupied by the molecules. c. Can the speci²c internal energy of an ideal gas change during an isothermal process? (Explain your answer.) Solution: No. The speci²c internal energy of an ideal gas depends only on the absolute temperature. e. List the forms of energy that contribute to the internal energy of
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 04/11/2008 for the course MASE 320 taught by Professor Shen during the Spring '08 term at Washington University in St. Louis.

Page1 / 5

midterm2006solution - ME320 Midterm Exam Name: October 24,...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online