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

Author Question: Relate the age of the universe to the Hubble constant. What will be an ideal ... (Read 66 times)

james9437

  • Hero Member
  • *****
  • Posts: 568
on: Jul 27, 2018
Relate the age of the universe to the Hubble constant.
 
  What will be an ideal response?

Question 2

What advantage do radio astronomers have over optical ones in mapping the entire Milky Way?
 
  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

Bigfoot1984

  • Sr. Member
  • ****
  • Posts: 321
Reply #1 on: Jul 27, 2018
Answer to Question 1

Inverting the Hubble constant and putting all distances in kilometers, gives us the age of the universe in seconds, assuming that Ho has never changed.

Answer to Question 2

Dust clouds block our view of all but the nearest spiral arms, but 21-cm radio waves can map the hydrogen gas in spiral arms all around the galaxy.


james9437

  • Hero Member
  • *****
  • Posts: 568
Reply #2 on: Jul 27, 2018
Thanks


Bigfoot1984

  • Sr. Member
  • ****
  • Posts: 321
Reply #3 on: Jul 27, 2018
Welcome :)


« previous next »
 

Did you know?

Urine turns bright yellow if larger than normal amounts of certain substances are consumed; one of these substances is asparagus.

Did you know?

The familiar sounds of your heart are made by the heart's valves as they open and close.

Did you know?

Patients who have undergone chemotherapy for the treatment of cancer often complain of a lack of mental focus; memory loss; and a general diminution in abilities such as multitasking, attention span, and general mental agility.

Did you know?

Atropine was named after the Greek goddess Atropos, the oldest and ugliest of the three sisters known as the Fates, who controlled the destiny of men.

Did you know?

Eat fiber! A diet high in fiber can help lower cholesterol levels by as much as 10%.

Inventory of the Universe Inventory of the Universe
Structure of the Early Universe Structure of the Early Universe
The Number of Children Americans Think Are Ideal The Number of Children Americans Think Are Ideal
The Solar Constant The Solar Constant
How to find the constant (C) after finding the anti-derivative How to find the constant (C) after finding the anti-derivative
Write equilibrium constant expressions for the following reactions in terms of concentration: Write equilibrium constant expressions for the following reactions in terms of concentration:
Video: Peptide Bond Formation Animation

For a complete list of videos, visit our video library