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 109 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
Great answer, keep it coming :)

CAPTAINAMERICA

  • Member
  • Posts: 325
Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

« previous next »
 

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?

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?

The U.S. Pharmacopeia Medication Errors Reporting Program states that approximately 50% of all medication errors involve insulin.

Did you know?

Cutaneous mucormycosis is a rare fungal infection that has been fatal in at least 29% of cases, and in as many as 83% of cases, depending on the patient's health prior to infection. It has occurred often after natural disasters such as tornados, and early treatment is essential.

Did you know?

About 3.2 billion people, nearly half the world population, are at risk for malaria. In 2015, there are about 214 million malaria cases and an estimated 438,000 malaria deaths.

A closed circulatory system. A closed circulatory system.
APPLYING A STERILE GOWN AND PERFORMING CLOSED GLOVING 1 APPLYING A STERILE GOWN AND PERFORMING CLOSED GLOVING 1
Creed - With Arms Wide Open Creed - With Arms Wide Open
A closed fracture. A closed fracture.
Heart valves in closed position viewed from the top. Heart valves in closed position viewed from the top.
Apply one-handed kneading of shoulder and neck muscles; end with flat palm circular superficial ... Apply one-handed kneading of shoulder and neck muscles; end with flat palm circular superficial ...
Video: Sickle Cell Anemia

For a complete list of videos, visit our video library