« previous next »

Author Question: The compressor in a certain Carnot refrigerator performs 480 J of work to remove 150 J of heat from ... (Read 45 times)

skymedlock

  • Hero Member
  • *****
  • Posts: 561
on: Jul 29, 2018
The compressor in a certain Carnot refrigerator performs 480 J of work to remove 150 J of heat from the interior of the refrigerator. How much heat must the coils behind the refrigerator discharge into the kitchen?
 
  A) 110 J
  B) 150 J
  C) 330 J
  D) 480 J
  E) 630 J

Question 2

A 2.0-kg block of aluminum at 50C is dropped into 5.0 kg of water at 20C and the temperature is allowed to stabilize.
 
  What is the total change in entropy during this process, assuming no heat is exchanged with the environment? The specific heat of aluminum is 910 J/(kgK) and the specific heat of water is 4190 J/(kgK). A) 8.2 J/K
  B) 10 J/K
  C) 3.3  10-2 J/K
  D) 3.8  10-3 J/K
  E) 2.4  10-3 J/K


dmurph1496

  • Sr. Member
  • ****
  • Posts: 343
Reply #1 on: Jul 29, 2018
Answer to Question 1

This is awesome you took your the time to answer these questions. You have been so helpful.

Answer to Question 2

A


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

IgA antibodies protect body surfaces exposed to outside foreign substances. IgG antibodies are found in all body fluids. IgM antibodies are the first type of antibody made in response to an infection. IgE antibody levels are often high in people with allergies. IgD antibodies are found in tissues lining the abdomen and chest.

Did you know?

There are 20 feet of blood vessels in each square inch of human skin.

Did you know?

Barbituric acid, the base material of barbiturates, was first synthesized in 1863 by Adolph von Bayer. His company later went on to synthesize aspirin for the first time, and Bayer aspirin is still a popular brand today.

Did you know?

The cure for trichomoniasis is easy as long as the patient does not drink alcoholic beverages for 24 hours. Just a single dose of medication is needed to rid the body of the disease. However, without proper precautions, an individual may contract the disease repeatedly. In fact, most people develop trichomoniasis again within three months of their last treatment.

Did you know?

Russia has the highest death rate from cardiovascular disease followed by the Ukraine, Romania, Hungary, and Poland.

Elephant work camp in Thailand. Elephants are used for heavy forest work and in circus presentations Elephant work camp in Thailand. Elephants are used for heavy forest work and in circus presentations
Men and women work the same number of hours a week, but men spend more time on paid work, and women ... Men and women work the same number of hours a week, but men spend more time on paid work, and women ...
Snap-ring pliers are also called lock-ring pliers, and they are designed to remove internal and ... Snap-ring pliers are also called lock-ring pliers, and they are designed to remove internal and ...
(A) X-ray technician performs a mammogram. (National Cancer Institute/Creator: Alan Hoofring ... (A) X-ray technician performs a mammogram. (National Cancer Institute/Creator: Alan Hoofring ...
Earth’s Heat Budget Earth’s Heat Budget
You heat 3.952 g of a mixture of Fe3O4 and FeO to form 4.162 g Fe2O3. The mass of oxygen ... You heat 3.952 g of a mixture of Fe3O4 and FeO to form 4.162 g Fe2O3. The mass of oxygen ...
Video: Skin Cancer

For a complete list of videos, visit our video library