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

Author Question: The fact that the properties of the Universe are close to the dividing line between open and closed ... (Read 25 times)

lracut11

  • Hero Member
  • *****
  • Posts: 536
on: Jul 27, 2018
The fact that the properties of the Universe are close to the dividing line between open and closed Universes refers to the _______________ problem.
 
  Fill in the blank(s) with correct word

Question 2

Why do sunspots occur darker than the rest of the Sun's surface?
 
  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

Ashley I

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

flatness

Answer to Question 2

Sunspots are cooler than the photosphere with a temperature of about 4200 K. The photosphere has a temperature of about 5800 K. Because the total amount of energy radiated by a surface depends on its temperature raised to the fourth power, sunspots look dark in comparison.


lracut11

  • Member
  • Posts: 536
Reply 2 on: Jul 27, 2018
Excellent

Dinolord

  • Member
  • Posts: 313
Reply 3 on: Yesterday
Wow, this really help

« previous next »
 

Did you know?

The first successful kidney transplant was performed in 1954 and occurred in Boston. A kidney from an identical twin was transplanted into his dying brother's body and was not rejected because it did not appear foreign to his body.

Did you know?

The FDA recognizes 118 routes of administration.

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?

Medication errors are more common among seriously ill patients than with those with minor conditions.

Did you know?

Stevens-Johnson syndrome and Toxic Epidermal Necrolysis syndrome are life-threatening reactions that can result in death. Complications include permanent blindness, dry-eye syndrome, lung damage, photophobia, asthma, chronic obstructive pulmonary disease, permanent loss of nail beds, scarring of mucous membranes, arthritis, and chronic fatigue syndrome. Many patients' pores scar shut, causing them to retain heat.

Iberian lynx in close-up Iberian lynx in close-up
Water Properties Water Properties
Structure in the Universe Structure in the Universe
How to find the equation of a line that is perpendicular to a line passing through a point How to find the equation of a line that is perpendicular to a line passing through a point
Open and closed comedones of acne Open and closed comedones of acne
Generation of the F2 trihybrid phenotypic ratio using the forked-line method Generation of the F2 trihybrid phenotypic ratio using the forked-line method
Video: The Lagging Strand in DNA Replication and Replication in Action

For a complete list of videos, visit our video library