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Get Full Access to Thermodynamics: An Engineering Approach - 8 Edition - Chapter 3 - Problem 42p
Get Full Access to Thermodynamics: An Engineering Approach - 8 Edition - Chapter 3 - Problem 42p

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# 100-kg of R-134a at 200 kPa- are contained in a

ISBN: 9780073398174 56

## Solution for problem 42P Chapter 3

Thermodynamics: An Engineering Approach | 8th Edition

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Problem 42P Problem 42P

100-kg of R-134a at 200 kPa- are contained in a piston-cylinder device whose volume is 12.322 m3. The piston is now moved until the volume is one-half its original size. This is done such that the pressure of the R-134a does not change. Determine the final temperature and the change in the total internal energy of the R-134a.

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Public Speaking Midterm Exam Study Guide (Chapters 1­9 and 13 Lecture Notes) 1/21/16 Chapter 3 • communication apprehension ­ fear or anxiety associated with real or anticipated communication • Factors Associated with CA: 1. poor preparation 2. trait anxiety 3. state anxiety 4. self­expectations 5. fear of evaluation 6. fearing that listeners perceive apprehension 7. fear of failure 8. overreacting to the body’s physiological response • envision a perfect performance and you’re more likely to be able to achieve it • to manage CA: ­ pick topics that you care about ­ practice makes progress ­ anticipate the speech situation ­ learn from the other speakers ­ remember that nervousness isn’t visible ­ maintain perspective • Power Pose ­ hold for two minutes and you come across as more competent and confident 1/28/16 Chapter 2 Listening is a multi­way process • Basic Model of Communication ­ simplest one­way communication • person speaking → channel of communication /message → person receiving 1 Speaker: is the encoder ­ they create the message (using spoken language, dependent on the context, etc) 2 Message: verbal or nonverbal 3 Receiver: the decoder of the message (Is the end message always the same No; i.e. • Two­Way Model of Communication • person speaking →channel of communication/message → person receiving and then back around again = the feedback loop • Noise (over the message): sources of noise are either: 1 external (construction) 2 internal (conflicts, breakups) 3 physiological (hunger, body temperature) 2/2/16 Listening and Speaking in a Democratic Society Listening is so difficult because we don’t practice ­ we look for shortcuts • Multitasking leads to: 1 40% drop in productivity 2 increased stress 3 10% avg. IQ drop • Process of Communication: Transaction Model • source­receiver (encodes­decodes) ­(feedback)­> message ­> source­receiver (encodes­decodes) source­receiver (encodes­decodes)

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