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

Author Question: Compare the amount of time a 20 solar mass star will stay on the main sequence to the length of time ... (Read 72 times)

wenmo

  • Hero Member
  • *****
  • Posts: 540
on: Jul 27, 2018
Compare the amount of time a 20 solar mass star will stay on the main sequence to the length of time its iron core can exist.
 
  What will be an ideal response?

Question 2

The youngest features visible with telescopes on the Moon are:
 
  A) the volcanoes seen erupting in the highlands.
  B) the craters sitting atop the mare.
  C) the darkest regions of the mare.
  D) the bright polar caps of new ice.
  E) the scarps recently created by tectonic activity.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

mistyjohnson

  • Sr. Member
  • ****
  • Posts: 331
Reply #1 on: Jul 27, 2018
Answer to Question 1

A 20 solar mass star will stay on the main sequence for 10 million years. Its iron core can exist for only a day.

Answer to Question 2

B


wenmo

  • Member
  • Posts: 540
Reply 2 on: Jul 27, 2018
:D TYSM

coreycathey

  • Member
  • Posts: 333
Reply 3 on: Yesterday
Excellent

« previous next »
 

Did you know?

Certain rare plants containing cyanide include apricot pits and a type of potato called cassava. Fortunately, only chronic or massive ingestion of any of these plants can lead to serious poisoning.

Did you know?

The familiar sounds of your heart are made by the heart's valves as they open and close.

Did you know?

The liver is the only organ that has the ability to regenerate itself after certain types of damage. As much as 25% of the liver can be removed, and it will still regenerate back to its original shape and size. However, the liver cannot regenerate after severe damage caused by alcohol.

Did you know?

The training of an anesthesiologist typically requires four years of college, 4 years of medical school, 1 year of internship, and 3 years of residency.

Did you know?

One way to reduce acid reflux is to lose two or three pounds. Most people lose weight in the belly area first when they increase exercise, meaning that heartburn can be reduced quickly by this method.

Star Map Southern Horizon Star Map Southern Horizon
Adenosine, Time of Day, and Hunger Adenosine, Time of Day, and Hunger
The bimetallic temperature sensor spring controls the amount of silicone that is allowed into the ... The bimetallic temperature sensor spring controls the amount of silicone that is allowed into the ...
Mass Wasting Triggers Mass Wasting Triggers
Sheep Fiber Length (cm) vs Fleece Weight (kg) Sheep Fiber Length (cm) vs Fleece Weight (kg)
Mass spectrometry (MS) patterns for a trypsin-digested peptide sequence Mass spectrometry (MS) patterns for a trypsin-digested peptide sequence
Video: Helper T cell receptors, activation, proliferation, differentiation & action

For a complete list of videos, visit our video library