Results of Quiz 2

Results of Quiz 2 - Question 1 is answered using P = gz or,...

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Question 1 is answered using P = ρ gz or, in this case 10 5 Pa = ( 1000 kg/m 3 )( 10 m/s 2 )(z) so z 10m Questions 2 & 3 are just to reinforce that the definition of thermodynamic state is different from a state of matter. Question 4 is just a reminder of the reciprocal relationship between density and specific volume. Question 5 refers to section 3-2 of the book which points out that ‘b’ is true. ‘a’ is true because ‘e’ is energy density which is independent of the extent of the system. ‘c’ is always true of a closed system. I made a mistake on Question 6 – the wrong answer was indicated as correct and I added a point to everyone’s score. I tried to manually change everyone’s score based on their individual answer, but the computer only records point so I could not uniquely determine an individual’s answer. Isolated means no mass and no energy can cross the boundary. It should be none of the above. Question 7 refers to section 3.4 of the book in which it is pointed out that all of the mechanisms that transfer energy into or out of a system that are not heat transfer are work. Question 8 ‘c’ is the textbook answer, but both ‘a’ and ‘b’ are the means
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This note was uploaded on 09/08/2009 for the course ENGR 225 taught by Professor Landau during the Spring '08 term at Case Western.

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Results of Quiz 2 - Question 1 is answered using P = gz or,...

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