« previous next »

Author Question: At what temperature is the average kinetic energy of an atom in helium gas equal to 6.21 10-21 J? ... (Read 232 times)

jeatrice

  • Hero Member
  • *****
  • Posts: 543
on: Jul 27, 2018
At what temperature is the average kinetic energy of an atom in helium gas equal to 6.21  10-21 J?
 
  What will be an ideal response?

Question 2

A Carnot refrigerator has a COP of 2.0.
 
  (a) What is its efficiency operated as an engine?
  (b) Operated as an engine, heat is taken in at 500.C; what is the exhaust Celsius temperature?


dpost18

  • Sr. Member
  • ****
  • Posts: 345
Reply #1 on: Jul 27, 2018
Answer to Question 1

300. K

Answer to Question 2

(a) 33.
(b) 242.C


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question

jeatrice

  • Hero Member
  • *****
  • Posts: 543
Reply #2 on: Jul 27, 2018
TY


dpost18

  • Sr. Member
  • ****
  • Posts: 345
Reply #3 on: Jul 27, 2018
You're welcome


« previous next »
 

Did you know?

Cucumber slices relieve headaches by tightening blood vessels, reducing blood flow to the area, and relieving pressure.

Did you know?

On average, someone in the United States has a stroke about every 40 seconds. This is about 795,000 people per year.

Did you know?

A cataract is a clouding of the eyes' natural lens. As we age, some clouding of the lens may occur. The first sign of a cataract is usually blurry vision. Although glasses and other visual aids may at first help a person with cataracts, surgery may become inevitable. Cataract surgery is very successful in restoring vision, and it is the most frequently performed surgery in the United States.

Did you know?

According to the American College of Allergy, Asthma & Immunology, more than 50 million Americans have some kind of food allergy. Food allergies affect between 4 and 6% of children, and 4% of adults, according to the CDC. The most common food allergies include shellfish, peanuts, walnuts, fish, eggs, milk, and soy.

Did you know?

To combat osteoporosis, changes in lifestyle and diet are recommended. At-risk patients should include 1,200 to 1,500 mg of calcium daily either via dietary means or with supplements.

Diagrams showing the multiple energy shells and orbitals of a nitrogen atom Diagrams showing the multiple energy shells and orbitals of a nitrogen atom
Evolution of the Sun's luminosity, radius and effective temperature compared to the present Sun Evolution of the Sun's luminosity, radius and effective temperature compared to the present Sun
The National Organization for Women holds a rally in Illinois for the Equal Rights Amendment. In ... The National Organization for Women holds a rally in Illinois for the Equal Rights Amendment. In ...
Predicted Temperature Trends Through the 21st Century Predicted Temperature Trends Through the 21st Century
Cycles of Air Temperature Cycles of Air Temperature
Mixing alcohol with caffeinated energy drinks can have dangerous consequences Mixing alcohol with caffeinated energy drinks can have dangerous consequences
Video: Electrical Conduction System of the Heart

For a complete list of videos, visit our video library