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 28 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
Wow, this really help


EAN94

  • Member
  • Posts: 307
Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

 

Did you know?

Though Candida and Aspergillus species are the most common fungal pathogens causing invasive fungal disease in the immunocompromised, infections due to previously uncommon hyaline and dematiaceous filamentous fungi are occurring more often today. Rare fungal infections, once accurately diagnosed, may require surgical debridement, immunotherapy, and newer antifungals used singly or in combination with older antifungals, on a case-by-case basis.

Did you know?

The heart is located in the center of the chest, with part of it tipped slightly so that it taps against the left side of the chest.

Did you know?

ACTH levels are normally highest in the early morning (between 6 and 8 A.M.) and lowest in the evening (between 6 and 11 P.M.). Therefore, a doctor who suspects abnormal levels looks for low ACTH in the morning and high ACTH in the evening.

Did you know?

Though newer “smart” infusion pumps are increasingly becoming more sophisticated, they cannot prevent all programming and administration errors. Health care professionals that use smart infusion pumps must still practice the rights of medication administration and have other professionals double-check all high-risk infusions.

Did you know?

Asthma is the most common chronic childhood disease in the world. Most children who develop asthma have symptoms before they are 5 years old.

For a complete list of videos, visit our video library