{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

HW8-10

# HW8-10 - Oregon State University Physics 202 HW8-10 Winter...

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

Oregon State University Physics 202 , Winter 2010 HW8-10 (due March 12 at 5:00 p.m.) Page 1 Oregon State University Physics 202 Winter Term, 2010 HW8-10 This HW assignment, due March 13, covers topics from Chapters o 11 and 12 of the text—and some may also use concepts and relations from other chapters r covered this term. Of these ten problems, three will be scored (for a possible 30 points). Donʼt forget the extra credit point that is available, too—see the course web site, under the links for recitation/Homework (HW). / Follow the recommended format for problem solutions, use SI units unless directed otherwise, and assume three significant digits in all numerical answers. Note that you may need to refer r to a periodic table—thereʼs one in your textbook. 1. Helium (He), a monatomic gas, fills a 0.031-m 3 container. The pressure of the gas is 5.6 x 10 5 Pa. How long would a 0.333-hp engine have to run (1 hp = 746 W) to produce an amount of energy equal to the internal energy of this gas? 2. The pressure of a certain tank of sulfur dioxide (SO 2 ) is 3.21 x 10 4 Pa. There are 214 moles of this gas in a volume of 40.0 m 3 . Find the translational rms speed of these gas molecules. Note: Although this gas is not monatomic (and would thus have some significant kinetic energy due to rotation of its molecules) , we can still approximate its translational kinetic energy (and therefore its l translational rms speed) using the monatomic l ideal gas model. 3. A heat engine produces a total of 425 J of work by using an ideal gas in these three processes: Beginning at a pressure of 1.32 x 10 5 Pa and a volume of 2.20 x 10 -3 m 3 , the pressure is increased isochorically to 5.70 x 10 5 Pa. Next, the gas expands adiabatically back to its original pressure. Finally, its volume is reduced isobari- cally back to its original volume. Calculate the efficiency of this engine.

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

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

### Page1 / 2

HW8-10 - Oregon State University Physics 202 HW8-10 Winter...

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

View Full Document
Ask a homework question - tutors are online