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

Author Question: Which of these is the likely progenitor of a type II supernova? A) a mass-transfer binary, with ... (Read 15 times)

nenivikky

  • Hero Member
  • *****
  • Posts: 516
on: Jul 27, 2018
Which of these is the likely progenitor of a type II supernova?
 
  A) a mass-transfer binary, with the white dwarf already at 1.3 solar masses
  B) a contact binary, with the neutron star at 2.3 solar masses
  C) an evolved red giant which is just starting to make silicon in its core
  D) two white dwarfs in a contact binary system
  E) an evolved blue supergiant that is about to experience the helium flash

Question 2

How did Alfred Wegener first notice the possibility of plate tectonics? What lies in the gap he noted?
 
  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

bigcheese9

  • Sr. Member
  • ****
  • Posts: 333
Reply #1 on: Jul 27, 2018
Answer to Question 1

C

Answer to Question 2

He found that the western coast of Africa was an almost perfect fit for the eastern coast of South America. We now know the Mid-Atlantic Rift sits between them and its expansion is causing them to continue separating with time.


nenivikky

  • Member
  • Posts: 516
Reply 2 on: Jul 27, 2018
YES! Correct, THANKS for helping me on my review

TheDev123

  • Member
  • Posts: 332
Reply 3 on: Yesterday
:D TYSM

« previous next »
 

Did you know?

According to the FDA, adverse drug events harmed or killed approximately 1,200,000 people in the United States in the year 2015.

Did you know?

According to the CDC, approximately 31.7% of the U.S. population has high low-density lipoprotein (LDL) or "bad cholesterol" levels.

Did you know?

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

Did you know?

Inotropic therapy does not have a role in the treatment of most heart failure patients. These drugs can make patients feel and function better but usually do not lengthen the predicted length of their lives.

Did you know?

Cocaine was isolated in 1860 and first used as a local anesthetic in 1884. Its first clinical use was by Sigmund Freud to wean a patient from morphine addiction. The fictional character Sherlock Holmes was supposed to be addicted to cocaine by injection.

Mechanisms of lipid transfer throughout a eukaryotic cell Mechanisms of lipid transfer throughout a eukaryotic cell
Wild-type versus mutant fly Wild-type versus mutant fly
Mass Loss from a Supermassive Star Mass Loss from a Supermassive Star
The sensing wire in a typical hot wire mass air flow sensor. The sensing wire in a typical hot wire mass air flow sensor.
Mass spectrometry (MS) patterns for a trypsin-digested peptide sequence Mass spectrometry (MS) patterns for a trypsin-digested peptide sequence
Planet Z-34 has a mass equal to 1/3 that of Earth, a radius equal to 1/3 that of Earth, and an ... Planet Z-34 has a mass equal to 1/3 that of Earth, a radius equal to 1/3 that of Earth, and an ...
Video: Junction Types - Tight and Adherens Junctions

For a complete list of videos, visit our video library