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 164 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?

The most common childhood diseases include croup, chickenpox, ear infections, flu, pneumonia, ringworm, respiratory syncytial virus, scabies, head lice, and asthma.

Did you know?

The most common treatment options for addiction include psychotherapy, support groups, and individual counseling.

Did you know?

Over time, chronic hepatitis B virus and hepatitis C virus infections can progress to advanced liver disease, liver failure, and hepatocellular carcinoma. Unlike other forms, more than 80% of hepatitis C infections become chronic and lead to liver disease. When combined with hepatitis B, hepatitis C now accounts for 75% percent of all cases of liver disease around the world. Liver failure caused by hepatitis C is now leading cause of liver transplants in the United States.

Did you know?

The horizontal fraction bar was introduced by the Arabs.

Did you know?

Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.

For a complete list of videos, visit our video library