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Author Question: The change in entropy of 20.0 moles of ideal monatomic constant volume gas as it changes from an ... (Read 147 times)

fox

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on: Jul 29, 2018
The change in entropy of 20.0 moles of ideal monatomic constant volume gas as it changes from an initial temperature 300 K to its final temperature is 200 J/K. What is the final temperature of the gas?
 
  A)
 
  669 K
 
  B)
 
  562 K
 
  C)
 
  427 K
 
  D)
 
  187 K
 
  E)
 
  345 K

Question 2

An object is placed on an optical bench. A lens with a focal length of 15 cm is placed 30 cm from the object. A diverging lens with a focal length of -10 cm is placed 7.0 cm beyond that.
 
  Where is the final image formed, relative to the second lens? A)
 
  45 cm beyond the diverging lens
  B)
 
  20 cm behind the diverging lens
  C)
 
  18 cm behind the diverging lens
  D)
 
  17 cm beyond the diverging lens
  E)
 
  30 cm beyond the diverging lens


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lgoldst9

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Reply #1 on: Jul 29, 2018
Answer to Question 1

A

Answer to Question 2

C


fox

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Reply #2 on: Jul 29, 2018
Both answers were spot on, thank you once again


lgoldst9

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Reply #3 on: Jul 29, 2018
Great! Please up vote :D


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