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

Author Question: As the Universe cooled, it eventually reached a temperature of 3,000 K and protons were able to ... (Read 184 times)

lb_gilbert

  • Hero Member
  • *****
  • Posts: 588
on: Jul 27, 2018
As the Universe cooled, it eventually reached a temperature of 3,000 K and protons were able to capture and hold electrons to form neutral hydrogen. This process is known as
 
  a. ionization.
  b. isotropy.
  c. annihilation.
  d. recombination.
  e. hydration.

Question 2

A star begins fusing hydrogen to helium the moment it leaves the main sequence.
 
  a. True
  b. False
  Indicate whether the statement is true or false


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

princessflame2016

  • Sr. Member
  • ****
  • Posts: 298
Reply #1 on: Jul 27, 2018
Answer to Question 1

d

Answer to Question 2

False


lb_gilbert

  • Hero Member
  • *****
  • Posts: 588
Reply #2 on: Jul 27, 2018
Thanks


princessflame2016

  • Sr. Member
  • ****
  • Posts: 298
Reply #3 on: Jul 27, 2018
Welcome :)


« previous next »
 

Did you know?

After 5 years of being diagnosed with rheumatoid arthritis, one every three patients will no longer be able to work.

Did you know?

When blood is deoxygenated and flowing back to the heart through the veins, it is dark reddish-blue in color. Blood in the arteries that is oxygenated and flowing out to the body is bright red. Whereas arterial blood comes out in spurts, venous blood flows.

Did you know?

Pregnant women usually experience a heightened sense of smell beginning late in the first trimester. Some experts call this the body's way of protecting a pregnant woman from foods that are unsafe for the fetus.

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 top 10 most important tips that will help you grow old gracefully include (1) quit smoking, (2) keep your weight down, (3) take supplements, (4) skip a meal each day or fast 1 day per week, (5) get a pet, (6) get medical help for chronic pain, (7) walk regularly, (8) reduce arguments, (9) put live plants in your living space, and (10) do some weight training.

Setup used to check the opening temperature of a thermostat. Setup used to check the opening temperature of a thermostat.
Influences on Temperature: Altitude and Elevation Influences on Temperature: Altitude and Elevation
Measurement of Temperature Measurement of Temperature
Effect of increasing temperature or lowering deltGo+ on the rates of reactions Effect of increasing temperature or lowering deltGo+ on the rates of reactions
How much the temperature will rise depends on many factors that affect the level of GHG emission How much the temperature will rise depends on many factors that affect the level of GHG emission
An 80-g aluminum calorimeter contains 380 g of water at an equilibrium temperature of A piece ... An 80-g aluminum calorimeter contains 380 g of water at an equilibrium temperature of A piece ...
Video: Vasectomy

For a complete list of videos, visit our video library