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

Author Question: What happens to the core of a star after a planetary nebula occurs? A) It contracts from a ... (Read 22 times)

cnetterville

  • Hero Member
  • *****
  • Posts: 547
on: Jul 27, 2018
What happens to the core of a star after a planetary nebula occurs?
 
  A) It contracts from a protostar to a main-sequence star.
  B) It breaks apart in a violent explosion.
  C) It becomes a white dwarf.
  D) It becomes a neutron star.
  E) none of the above

Question 2

The average density of the Moon is less than that of the Earth.
 
  Indicate whether the statement is true or false


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Melissahxx

  • Sr. Member
  • ****
  • Posts: 304
Reply #1 on: Jul 27, 2018
Answer to Question 1

C

Answer to Question 2

TRUE


cnetterville

  • Hero Member
  • *****
  • Posts: 547
Reply #2 on: Jul 27, 2018
Thanks


Melissahxx

  • Sr. Member
  • ****
  • Posts: 304
Reply #3 on: Jul 27, 2018
Welcome :)


« previous next »
 

Did you know?

The immune system needs 9.5 hours of sleep in total darkness to recharge completely.

Did you know?

According to the American College of Allergy, Asthma & Immunology, more than 50 million Americans have some kind of food allergy. Food allergies affect between 4 and 6% of children, and 4% of adults, according to the CDC. The most common food allergies include shellfish, peanuts, walnuts, fish, eggs, milk, and soy.

Did you know?

Although not all of the following muscle groups are commonly used, intramuscular injections may be given into the abdominals, biceps, calves, deltoids, gluteals, laterals, pectorals, quadriceps, trapezoids, and triceps.

Did you know?

Medication errors are three times higher among children and infants than with adults.

Did you know?

In most climates, 8 to 10 glasses of water per day is recommended for adults. The best indicator for adequate fluid intake is frequent, clear urination.

Star Map Star Map
Fully Convective Star Fully Convective Star
Spectra of a Metal-Poor and a Metal-Rich Star Spectra of a Metal-Poor and a Metal-Rich Star
A star link-type network where all of the modules are connected together using splice packs. A star link-type network where all of the modules are connected together using splice packs.
Scientists with ice core Scientists with ice core
Conversion of F+ to an Hfr state occurs by integration of the F factor Conversion of F+ to an Hfr state occurs by integration of the F factor
Video: Coronary Heart Disease Animation

For a complete list of videos, visit our video library