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

Author Question: Briefly describe the order of creation of normal matter in the Big Bang. What will be an ideal ... (Read 34 times)

skymedlock

  • Hero Member
  • *****
  • Posts: 561
on: Jul 27, 2018
Briefly describe the order of creation of normal matter in the Big Bang.
 
  What will be an ideal response?

Question 2

A cloud fragment too small to collapse into a main sequence star becomes a
 
  A) pulsar.
  B) planet of another star.
  C) T-Tauri object.
  D) brown dwarf.
  E) white dwarf.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

al

  • Sr. Member
  • ****
  • Posts: 344
Reply #1 on: Jul 27, 2018
Answer to Question 1

Radiation originally filled the entire universe. There was sufficient energy for photons to transform into stable protons and neutrons. As temperatures dropped, electrons and positrons were formed next. Meanwhile, the protons and neutrons fused to make deuterium, and deuterium fusion led to helium production in the first few minutes. As the temperature fell still more, this production ceased, and finally at decoupling, electrons began to orbit the protons to form neutral hydrogen atoms.

Answer to Question 2

D


skymedlock

  • Member
  • Posts: 561
Reply 2 on: Jul 27, 2018
Excellent

rachel

  • Member
  • Posts: 323
Reply 3 on: Yesterday
Gracias!

« previous next »
 

Did you know?

Many people have small pouches in their colons that bulge outward through weak spots. Each pouch is called a diverticulum. About 10% of Americans older than age 40 years have diverticulosis, which, when the pouches become infected or inflamed, is called diverticulitis. The main cause of diverticular disease is a low-fiber diet.

Did you know?

Vampire bats have a natural anticoagulant in their saliva that permits continuous bleeding after they painlessly open a wound with their incisors. This capillary blood does not cause any significant blood loss to their victims.

Did you know?

The Centers for Disease Control and Prevention (CDC) was originally known as the Communicable Disease Center, which was formed to fight malaria. It was originally headquartered in Atlanta, Georgia, since the Southern states faced the worst threat from malaria.

Did you know?

Vital signs (blood pressure, temperature, pulse rate, respiration rate) should be taken before any drug administration. Patients should be informed not to use tobacco or caffeine at least 30 minutes before their appointment.

Did you know?

In 1885, the Lloyd Manufacturing Company of Albany, New York, promoted and sold "Cocaine Toothache Drops" at 15 cents per bottle! In 1914, the Harrison Narcotic Act brought the sale and distribution of this drug under federal control.

Brain scans showing the white-matter pathways involved in everyday learning: Brain scans showing the white-matter pathways involved in everyday learning:
Normal artery versus plaque formation Normal artery versus plaque formation
A scope display showing a normal Chevrolet Equinox MAF sensor at idle speed. the frequency is 2,600 ... A scope display showing a normal Chevrolet Equinox MAF sensor at idle speed. the frequency is 2,600 ...
Determining the order and rate constant of an irreversible first-order reaction Determining the order and rate constant of an irreversible first-order reaction
This image shows a normal third-trimester fetal brain This image shows a normal third-trimester fetal brain
Describe the Conceptual Forecasting Framework in your own words. Describe the Conceptual Forecasting Framework in your own words.
Video: Blood Pressure Measurement

For a complete list of videos, visit our video library