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

Author Question: Cepheid variable stars stop pulsating when: A) they evolve out of the instability strip of the ... (Read 75 times)

NguyenJ

  • Hero Member
  • *****
  • Posts: 516
on: Jul 27, 2018
Cepheid variable stars stop pulsating when:
 
  A) they evolve out of the instability strip of the H-R diagram.
  B) they enter the zero-age main sequence.
  C) they begin their stable lives fusing hydrogen.
  D) they reach the lower edge of the main sequence of the H-R diagram.

Question 2

__________are objects used to map spiral arms.
 
  A) Spiral locators
  B) Spiral tracers
  C) Arm finders
  D) Spiral waves


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Toya9913

  • Sr. Member
  • ****
  • Posts: 341
Reply #1 on: Jul 27, 2018
Answer to Question 1

A

Answer to Question 2

B


NguyenJ

  • Member
  • Posts: 516
Reply 2 on: Jul 27, 2018
Great answer, keep it coming :)

cdmart10

  • Member
  • Posts: 332
Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

« previous next »
 

Did you know?

Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.

Did you know?

Thyroid conditions may make getting pregnant impossible.

Did you know?

Hip fractures are the most serious consequences of osteoporosis. The incidence of hip fractures increases with each decade among patients in their 60s to patients in their 90s for both women and men of all populations. Men and women older than 80 years of age show the highest incidence of hip fractures.

Did you know?

Blastomycosis is often misdiagnosed, resulting in tragic outcomes. It is caused by a fungus living in moist soil, in wooded areas of the United States and Canada. If inhaled, the fungus can cause mild breathing problems that may worsen and cause serious illness and even death.

Did you know?

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

All objects in the image are distant galaxies – not stars All objects in the image are distant galaxies – not stars
Applying a time strip to the IV container. Applying a time strip to the IV container.
The Pleiades, an open cluster of stars in the constellation of Taurus. These stars share a common mo The Pleiades, an open cluster of stars in the constellation of Taurus. These stars share a common mo
A Model of a Pulsating X-Ray Source A Model of a Pulsating X-Ray Source
Stars and constellations Stars and constellations
After connecting the shutoff tool, start the engine and operate all accessories. Stop the engine ... After connecting the shutoff tool, start the engine and operate all accessories. Stop the engine ...
Video: How does an animal choose what food to eat?

For a complete list of videos, visit our video library