Civil and Environmental Engineering 2224 Lecture Notes - Lecture 2: Gas Constant, Surface Tension, Vapor Pressure

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harlequinbadger850

5 Oct 2018

School

Western University

Department

Civil and Environmental Engineering

Course

Civil and Environmental Engineering 2224

Professor

Dr. Craig Miller

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Note: vapour pressure is a fluid property so different fludids will have different. There is some cool engineering examples of when cavitation happens. Cavition can cause damange to things like rotating water pumps and ship propellors. Whenever the water pressure near something is chainging due to a force applied by that something, cavitation can happed. Basically trying to figure out the fluid pressure at a point pv = (nrut) /m. So basically, in chem 1301 we used a more basic verison of this concept that we could apply to certain contexts, but not all. I(cid:374) order to get the ideal gas law i(cid:374)to the for(cid:373) of p = rt, we (cid:374)eed to find a specific gas constant r for the gas. This is a ratio of our known universal gas constant and the molar mass in order to make it specific to that gas. Therefore constant t (ru is already a material constant)

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3. Write a short phrase or sentence from page 1 that demonstrates imagery. Explain HOW it demonstrates imagery being specific as to which sense.

Excerpt From The Soloist by Steve Lopez

Preface

1 I'm on foot in downtown Los Angeles, hustling back to the office with another. deadline looming. That's when I see him. He's dressed in rags on a busy downtown street comer, playing Beethoven on a battered violin that looks like it's been pulled from a dumpster.

2 "That sounded pretty good, " 1 say when he finishes.

3 He jumps back three steps, eyeing me with suspicion. 1 see the name Stevie Wander carved into the face of the violin, along with felt-pen doodles.

4 "Oh, thank you very much," he says, obviously flattered. "Are you serious?"

5 "I'm not a musician," I answer. "But yes. It sounded good to me."

6 He is black, just beyond fifty, with butterscotch eyes that warm to the compliment. He is standing next to a shopping cart heaped over with all his belongings, and yet despite grubby, soiled clothing, there's a rumpled elegance about him. He speaks with a slight regional accent I can't place. Maybe he's from the Midwest or up near the Great? Lakes, and he seems to have been told to always stand up straight, enunciate, carry, himself with pride and respect others.

7 'I'm trying to get back in shape," he says. "But I'm going to get back in there, playing better. I just need to keep practicing."

8 "So you like Stevie Wonder?" 1 ask.

9 "Oh, yes, certainly, 'You Are the Sunshine of My Life.' 'My Cherie Amour.' I guess I shouldn't have written his name on my violin, though."

10 I write a column for the Los Angeles Times. The job is a little like fishing. You go out and drop a line, cast a net. I'm figuring this vagrant violinist is a column. Has to be.

11 "I'm in a hurry at the moment," I tell him, "but I'd like to come back and hear you play again."

12 'Oh, all right," he says, smiling appreciatively but with trepidation. He looks like....

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Civil and Environmental Engineering 2224 Lecture Notes - Lecture 2: Gas Constant, Surface Tension, Vapor Pressure

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