Author Question: All of the following are clusters of galaxies EXCEPT: A) Andromeda. B) Perseus. C) Coma. D) ... (Read 37 times)

littleanan

  • Hero Member
  • *****
  • Posts: 575
All of the following are clusters of galaxies EXCEPT:
 
  A) Andromeda.
  B) Perseus.
  C) Coma.
  D) Virgo.
  E) Hydra.

Question 2

In comparing first magnitude Deneb with second magnitude Polaris, we find that:
 
  A) Polaris is in reality much more luminous.
  B) Deneb must be much hotter than Polaris.
  C) Deneb appears 2.5 times brighter to us than does Polaris.
  D) Polaris is really 100 times brighter than nearby Deneb.
  E) Deneb is really much closer than Polaris.



TheNamesImani

  • Sr. Member
  • ****
  • Posts: 334
Answer to Question 1

A

Answer to Question 2

C



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

Did you know?

Malaria was not eliminated in the United States until 1951. The term eliminated means that no new cases arise in a country for 3 years.

Did you know?

Always store hazardous household chemicals in their original containers out of reach of children. These include bleach, paint, strippers and products containing turpentine, garden chemicals, oven cleaners, fondue fuels, nail polish, and nail polish remover.

Did you know?

About one in five American adults and teenagers have had a genital herpes infection—and most of them don't know it. People with genital herpes have at least twice the risk of becoming infected with HIV if exposed to it than those people who do not have genital herpes.

Did you know?

The toxic levels for lithium carbonate are close to the therapeutic levels. Signs of toxicity include fine hand tremor, polyuria, mild thirst, nausea, general discomfort, diarrhea, vomiting, drowsiness, muscular weakness, lack of coordination, ataxia, giddiness, tinnitus, and blurred vision.

Did you know?

No drugs are available to relieve parathyroid disease. Parathyroid disease is caused by a parathyroid tumor, and it needs to be removed by surgery.

For a complete list of videos, visit our video library