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

Author Question: If a galaxy has a radial velocity of 8000 km/s and the Hubble constant is 70 km/s/Mpc, what is the ... (Read 80 times)

DelorasTo

  • Hero Member
  • *****
  • Posts: 548
on: Jul 27, 2018
If a galaxy has a radial velocity of 8000 km/s and the Hubble constant is 70 km/s/Mpc, what is the distance to this galaxy?
 
  a. 8.75  103 Mpc
  b. 2.4  109 Mpc
  c. 5.6  105 Mpc
  d. 114 Mpc
  e. 8.75  10-3 Mpc

Question 2

Why do nuclear reactions in a star occur only near its center?
 
  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

ilianabrrr

  • Sr. Member
  • ****
  • Posts: 332
Reply #1 on: Jul 27, 2018
Answer to Question 1

d

Answer to Question 2

High-speed collisions between atoms and subatomic particles are necessary to overcome the Coulomb barrier, and this means high temperature. The gas density must also be high so the number of collisions per second is large. Only near a star's center are these conditions right for nuclear reactions to occur.


DelorasTo

  • Member
  • Posts: 548
Reply 2 on: Jul 27, 2018
Wow, this really help

ryansturges

  • Member
  • Posts: 338
Reply 3 on: Yesterday
Gracias!

« previous next »
 

Did you know?

Aspirin may benefit 11 different cancers, including those of the colon, pancreas, lungs, prostate, breasts, and leukemia.

Did you know?

About 60% of newborn infants in the United States are jaundiced; that is, they look yellow. Kernicterus is a form of brain damage caused by excessive jaundice. When babies begin to be affected by excessive jaundice and begin to have brain damage, they become excessively lethargic.

Did you know?

Pink eye is a term that refers to conjunctivitis, which is inflammation of the thin, clear membrane (conjunctiva) over the white part of the eye (sclera). It may be triggered by a virus, bacteria, or foreign body in the eye. Antibiotic eye drops alleviate bacterial conjunctivitis, and antihistamine allergy pills or eye drops help control allergic conjunctivitis symptoms.

Did you know?

Your chance of developing a kidney stone is 1 in 10. In recent years, approximately 3.7 million people in the United States were diagnosed with a kidney disease.

Did you know?

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

Hubble’s Tuning Fork Diagram Hubble’s Tuning Fork Diagram
Velocity Velocity
Spiral Galaxy Messier 83 Spiral Galaxy Messier 83
Relative Humidity Changes at Constant Water-Vapor Content Relative Humidity Changes at Constant Water-Vapor Content
Hubble Space telescope Hubble Space telescope
What is the maximum velocity (in km/s) of a photoelectron emitted from a surface whose work ... What is the maximum velocity (in km/s) of a photoelectron emitted from a surface whose work ...
Video: hGH, Thyroid hormones & Aldosterone

For a complete list of videos, visit our video library