This topic contains a solution. Click here to go to the answer

Author Question: Cepheid variables are useful in measuring the distance to ____. a. globular clusters and dwarf ... (Read 30 times)

debasdf

  • Hero Member
  • *****
  • Posts: 570
Cepheid variables are useful in measuring the distance to ____.
 
  a. globular clusters and dwarf galaxies around the Milky way, but nothing farther
  b. globular clusters and the Andromeda Galaxy, but not more distant objects
 c. galaxies that are within 30 megaparsecs, a relatively short distance
 d. galaxies that are moderately far away, up to about 500 megaparsecs
 e. galaxies and galactic clusters within a gigaparsec of the Milky Way

Question 2

Light gathering power and resolving power both depend on what characteristic of a telescope?
 
  a. number of lenses
  b. magnification
 c. focal length
 d. location
 e. diameter



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

softEldritch

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

c

Answer to Question 2

e




debasdf

  • Member
  • Posts: 570
Reply 2 on: Jul 27, 2018
Excellent


6ana001

  • Member
  • Posts: 311
Reply 3 on: Yesterday
Wow, this really help

 

Did you know?

Immunoglobulin injections may give short-term protection against, or reduce severity of certain diseases. They help people who have an inherited problem making their own antibodies, or those who are having certain types of cancer treatments.

Did you know?

Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.

Did you know?

Approximately one in three babies in the United States is now delivered by cesarean section. The number of cesarean sections in the United States has risen 46% since 1996.

Did you know?

More than nineteen million Americans carry the factor V gene that causes blood clots, pulmonary embolism, and heart disease.

Did you know?

Prostaglandins were first isolated from human semen in Sweden in the 1930s. They were so named because the researcher thought that they came from the prostate gland. In fact, prostaglandins exist and are synthesized in almost every cell of the body.

For a complete list of videos, visit our video library