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

Author Question: How long does the sunspot cycle last, on average? A) between 25 and 35 days B) about seven years ... (Read 95 times)

fasfsadfdsfa

  • Hero Member
  • *****
  • Posts: 554
on: Jul 27, 2018
How long does the sunspot cycle last, on average?
 
  A) between 25 and 35 days
  B) about seven years
  C) 365.25 days
  D) about 11 years
  E) about 76 years

Question 2

Contrast the sizes and membership of the Local Group and Virgo Cluster.
 
  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

briezy

  • Sr. Member
  • ****
  • Posts: 347
Reply #1 on: Jul 27, 2018
Answer to Question 1

D

Answer to Question 2

Our Local Group is only 55 members, and about 1 Mpc across. The Virgo Cluster lies about 18.5 Mpc distant, is roughly 3 Mpc across, and contains more than 2500 galaxies.


fasfsadfdsfa

  • Member
  • Posts: 554
Reply 2 on: Jul 27, 2018
Thanks for the timely response, appreciate it

strudel15

  • Member
  • Posts: 324
Reply 3 on: Yesterday
Excellent

« previous next »
 

Did you know?

There can actually be a 25-hour time difference between certain locations in the world. The International Date Line passes between the islands of Samoa and American Samoa. It is not a straight line, but "zig-zags" around various island chains. Therefore, Samoa and nearby islands have one date, while American Samoa and nearby islands are one day behind. Daylight saving time is used in some islands, but not in others—further shifting the hours out of sync with natural time.

Did you know?

For about 100 years, scientists thought that peptic ulcers were caused by stress, spicy food, and alcohol. Later, researchers added stomach acid to the list of causes and began treating ulcers with antacids. Now it is known that peptic ulcers are predominantly caused by Helicobacter pylori, a spiral-shaped bacterium that normally exist in the stomach.

Did you know?

If you could remove all of your skin, it would weigh up to 5 pounds.

Did you know?

There used to be a metric calendar, as well as metric clocks. The metric calendar, or "French Republican Calendar" divided the year into 12 months, but each month was divided into three 10-day weeks. Each day had 10 decimal hours. Each hour had 100 decimal minutes. Due to lack of popularity, the metric clocks and calendars were ended in 1795, three years after they had been first marketed.

Did you know?

Oliver Wendell Holmes is credited with introducing the words "anesthesia" and "anesthetic" into the English language in 1846.

On average, the ratio of carbon to nitrogen is much higher in terrestrial plants than in other major On average, the ratio of carbon to nitrogen is much higher in terrestrial plants than in other major
Long-Term Potentiation Long-Term Potentiation
On March 25, 1911, as scores of young factory girls leaped to their deaths from the eighth, ninth, a On March 25, 1911, as scores of young factory girls leaped to their deaths from the eighth, ninth, a
Summary of the Krebs cycle. Summary of the Krebs cycle.
Carbon Dioxide Concentrations for 400,000 years Carbon Dioxide Concentrations for 400,000 years
Life cycle of the beef tapeworm (Taenia saginata). Life cycle of the beef tapeworm (Taenia saginata).
Video: Interview with Person who has Schizophrenia

For a complete list of videos, visit our video library