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

Author Question: Whether the Universe is open, closed or flat depends, on the ___________ of the Universe. a. ... (Read 36 times)

Zoey63294

  • Hero Member
  • *****
  • Posts: 539
on: Jul 27, 2018
Whether the Universe is open, closed or flat depends, on the ___________ of the Universe.
 
  a. luminosity
  b. density
  c. temperature
  d. radius
  e. rotation rate

Question 2

Why can't lower-main-sequence stars become giant stars?
 
  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

LegendaryAnswers

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

b

Answer to Question 2

Stars between 0.08 and about 0.4 solar mass, the red dwarfs, are mixed by convection, and so can't develop inert helium cores surrounded by unprocessed hydrogen. For this reason a red dwarf can never ignite a hydrogen shell and can't become a giant star.


Zoey63294

  • Member
  • Posts: 539
Reply 2 on: Jul 27, 2018
Thanks for the timely response, appreciate it

31809pancho

  • Member
  • Posts: 317
Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

« previous next »
 

Did you know?

There are more bacteria in your mouth than there are people in the world.

Did you know?

Your skin wrinkles if you stay in the bathtub a long time because the outermost layer of skin (which consists of dead keratin) swells when it absorbs water. It is tightly attached to the skin below it, so it compensates for the increased area by wrinkling. This happens to the hands and feet because they have the thickest layer of dead keratin cells.

Did you know?

Ether was used widely for surgeries but became less popular because of its flammability and its tendency to cause vomiting. In England, it was quickly replaced by chloroform, but this agent caused many deaths and lost popularity.

Did you know?

Less than one of every three adults with high LDL cholesterol has the condition under control. Only 48.1% with the condition are being treated for it.

Did you know?

Illness; diuretics; laxative abuse; hot weather; exercise; sweating; caffeine; alcoholic beverages; starvation diets; inadequate carbohydrate consumption; and diets high in protein, salt, or fiber can cause people to become dehydrated.

Cheetah at the Werribee Open Range Zoo Cheetah at the Werribee Open Range Zoo
Early History of the Universe Early History of the Universe
An open chamber MRI may be more comfortable for the patient, but images may not be as distinct. An open chamber MRI may be more comfortable for the patient, but images may not be as distinct.
Knead lower leg muscles by bending the knee until the foot is flat on the supporting surface. Reach ... Knead lower leg muscles by bending the knee until the foot is flat on the supporting surface. Reach ...
A closed loop conductor that forms a circle with a radius of is located in a uniform but ... A closed loop conductor that forms a circle with a radius of is located in a uniform but ...
Video: Monohybrid crosses

For a complete list of videos, visit our video library