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 152 times)

jake

  • Hero Member
  • *****
  • Posts: 538
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

  • Sr. Member
  • ****
  • Posts: 298
Answer to Question 1

0.2 cal/K

Answer to Question 2

D



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

Did you know?

People with alcoholism are at a much greater risk of malnutrition than are other people and usually exhibit low levels of most vitamins (especially folic acid). This is because alcohol often takes the place of 50% of their daily intake of calories, with little nutritional value contained in it.

Did you know?

Carbamazepine can interfere with the results of home pregnancy tests. If you are taking carbamazepine, do not try to test for pregnancy at home.

Did you know?

The first successful kidney transplant was performed in 1954 and occurred in Boston. A kidney from an identical twin was transplanted into his dying brother's body and was not rejected because it did not appear foreign to his body.

Did you know?

Warfarin was developed as a consequence of the study of a strange bleeding disorder that suddenly occurred in cattle on the northern prairies of the United States in the early 1900s.

Did you know?

To prove that stomach ulcers were caused by bacteria and not by stress, a researcher consumed an entire laboratory beaker full of bacterial culture. After this, he did indeed develop stomach ulcers, and won the Nobel Prize for his discovery.

For a complete list of videos, visit our video library