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Author Question: A piece of metal at 80C is placed in 1.2 L of water at 72C. The system is thermally isolated and ... (Read 153 times)

jake

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on: Jul 27, 2018
A piece of metal at 80C is placed in 1.2 L of water at 72C. The system is thermally isolated and reaches a final temperature of 75C. Estimate the approximate change in entropy for this process.
 
  What will be an ideal response?

Question 2

When a dielectric material is introduced between the plates of a parallel plate capacitor the capacitance increases by a factor of 4. What is the dielectric constant of the material introduced between the plates?
 
  A) 0.4
  B) 1/4
  C) 2
  D) 4
  E) None of the other choices is correct.


welcom1000

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Reply #1 on: Jul 27, 2018
Answer to Question 1

0.2 cal/K

Answer to Question 2

D


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