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

Author Question: The hot gas of the big bang seems to be cool at about 2.7 K because: A) the expansion of the ... (Read 39 times)

B

  • Hero Member
  • *****
  • Posts: 570
on: Jul 27, 2018
The hot gas of the big bang seems to be cool at about 2.7 K because:
 
  A) the expansion of the Universe has decreased the wavelengths of the radiation emitted by the big bang.
  B) the gas clouds that emitted the photons during the big bang had a temperature of 2.7 K.
  C) the expansion of the Universe has redshifted the wavelengths of the radiation emitted by the big bang about 1100 times longer.
  D) the gas clouds that emitted the photons during the big bang emitted blackbody radiation with a wavelength of 2.7 nm.

Question 2

Modern evidence based on what can be determined about the products of nuclear reactions in the first few minutes after the big bang shows that dark matter:
 
  A) does not have any density.
  B) does not exist.
  C) is not present in galaxies.
  D) is not baryonic.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

mmj22343

  • Sr. Member
  • ****
  • Posts: 297
Reply #1 on: Jul 27, 2018
Answer to Question 1

C

Answer to Question 2

D


B

  • Member
  • Posts: 570
Reply 2 on: Jul 27, 2018
YES! Correct, THANKS for helping me on my review

irishcancer18

  • Member
  • Posts: 310
Reply 3 on: Yesterday
Excellent

« previous next »
 

Did you know?

Glaucoma is a leading cause of blindness. As of yet, there is no cure. Everyone is at risk, and there may be no warning signs. It is six to eight times more common in African Americans than in whites. The best and most effective way to detect glaucoma is to receive a dilated eye examination.

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?

Every flu season is different, and even healthy people can get extremely sick from the flu, as well as spread it to others. The flu season can begin as early as October and last as late as May. Every person over six months of age should get an annual flu vaccine. The vaccine cannot cause you to get influenza, but in some seasons, may not be completely able to prevent you from acquiring influenza due to changes in causative viruses. The viruses in the flu shot are killed—there is no way they can give you the flu. Minor side effects include soreness, redness, or swelling where the shot was given. It is possible to develop a slight fever, and body aches, but these are simply signs that the body is responding to the vaccine and making itself ready to fight off the influenza virus should you come in contact with it.

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.

Did you know?

On average, the stomach produces 2 L of hydrochloric acid per day.

Toucan uses beak to keep it cool Toucan uses beak to keep it cool
Thoracic Expansion, Posterior Thoracic Expansion, Posterior
Repeat expansion Repeat expansion
Growth in Cold and Cool Clouds Growth in Cold and Cool Clouds
Expansion Ratios for Liquefied Compressed Gases Expansion Ratios for Liquefied Compressed Gases
Rapidly decreasing sequence costs have enabled the rapid expansion Rapidly decreasing sequence costs have enabled the rapid expansion
Video: Structure of Amino Acid, Peptide Bonds & Polypeptides

For a complete list of videos, visit our video library