This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: About 1 s after the Big Bang, the temperature of the universe was about 1013 K. What energy (in eV) ... (Read 40 times)

magmichele12

  • Hero Member
  • *****
  • Posts: 559
on: Jul 29, 2018
About 1 s after the Big Bang, the temperature of the universe was about 1013 K. What energy (in eV) does this correspond to?
 
  A)
 
  1 neV
  B)
 
  1 keV
  C)
 
  1 MeV
  D)
 
  1 GeV
  E)
 
  1 TeV

Question 2

Describe the operation of an automobile internal combustion engine in terms of the Otto cycle.
 
  What will be an ideal response?


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

nothere

  • Sr. Member
  • ****
  • Posts: 324
Reply #1 on: Jul 29, 2018
Answer to Question 1

D

Answer to Question 2

The gas (gasoline-air mixture) enters the cylinder and is compressed adiabatically (compression stroke). After the ignition occurs (spark plug), burning of the gas adds heat to the system at constant volume. The temperature and pressure rise, and then in the power stroke, the gas expands adiabatically. In the exhaust stroke, heat is ejected to the environment (in a real engine, the gas leaves the engine and is replaced by a new mixture of air and fuel).


magmichele12

  • Member
  • Posts: 559
Reply 2 on: Jul 29, 2018
Wow, this really help

dawsa925

  • Member
  • Posts: 326
Reply 3 on: Yesterday
Gracias!

« previous next »
 

Did you know?

Normal urine is sterile. It contains fluids, salts, and waste products. It is free of bacteria, viruses, and fungi.

Did you know?

Once thought to have neurofibromatosis, Joseph Merrick (also known as "the elephant man") is now, in retrospect, thought by clinical experts to have had Proteus syndrome. This endocrine disease causes continued and abnormal growth of the bones, muscles, skin, and so on and can become completely debilitating with severe deformities occurring anywhere on the body.

Did you know?

The first war in which wide-scale use of anesthetics occurred was the Civil War, and 80% of all wounds were in the extremities.

Did you know?

If you use artificial sweeteners, such as cyclamates, your eyes may be more sensitive to light. Other factors that will make your eyes more sensitive to light include use of antibiotics, oral contraceptives, hypertension medications, diuretics, and antidiabetic medications.

Did you know?

One way to reduce acid reflux is to lose two or three pounds. Most people lose weight in the belly area first when they increase exercise, meaning that heartburn can be reduced quickly by this method.

Energy Chart Energy Chart
Predicted Temperature Trends Through the 21st Century Predicted Temperature Trends Through the 21st Century
The seven chakras or energy centers in Ayurvedic philosophy. Courtesy of Rev. Larissa Dahroug, ... The seven chakras or energy centers in Ayurvedic philosophy. Courtesy of Rev. Larissa Dahroug, ...
5-4 The relationship between vapor pressure and temperature—in this case for water. As the ... 5-4 The relationship between vapor pressure and temperature—in this case for water. As the ...
Controls of Temperature Controls of Temperature
chemistry homework help energy related chemistry homework help energy related
Video: Muscular System Animation

For a complete list of videos, visit our video library