« previous next »

Author Question: Two stars, Betty and Wilma, are both on the main sequence. Betty is more luminous than Wilma. ... (Read 86 times)

Awilson837

  • Hero Member
  • *****
  • Posts: 509
on: Jul 27, 2018
Two stars, Betty and Wilma, are both on the main sequence. Betty is more luminous than Wilma.
 
  Which one has a hotter surface temperature? Which one is more massive? Which one is bigger? If they both formed at the same time, which one will evolve off the main sequence first?

Question 2

Process of Science: What evidence is there of a subsurface ocean on Europa? Do you find it compelling?
 
  What will be an ideal response?


joneynes

  • Sr. Member
  • ****
  • Posts: 376
Reply #1 on: Jul 27, 2018
Answer to Question 1

Since they are both on the main sequence but Betty is more luminous than Wilma, Betty must be located higher up on the main sequence. Therefore, Betty has a hotter surface temperature, is more massive, and has a larger radius. Betty will also evolve faster than Wilma, and if they were formed at the same time Betty will turn off the main sequence first.

Answer to Question 2

The main evidence comes from trying to find a mechanism to explain Europa's magnetic field variation. It appears to be due to an induced field, possibly from a conducting substance, such as a salty subsurface ocean.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

In ancient Rome, many of the richer people in the population had lead-induced gout. The reason for this is unclear. Lead poisoning has also been linked to madness.

Did you know?

The eye muscles are the most active muscles in the whole body. The external muscles that move the eyes are the strongest muscles in the human body for the job they have to do. They are 100 times more powerful than they need to be.

Did you know?

Although puberty usually occurs in the early teenage years, the world's youngest parents were two Chinese children who had their first baby when they were 8 and 9 years of age.

Did you know?

Children of people with alcoholism are more inclined to drink alcohol or use hard drugs. In fact, they are 400 times more likely to use hard drugs than those who do not have a family history of alcohol addiction.

Did you know?

Street names for barbiturates include reds, red devils, yellow jackets, blue heavens, Christmas trees, and rainbows. They are commonly referred to as downers.

Much of the dark space between stars, as seen in the sky of the image above, is due to the human eye Much of the dark space between stars, as seen in the sky of the image above, is due to the human eye
An example of a Hertzsprung–Russell diagram for a set of stars that includes the Sun An example of a Hertzsprung–Russell diagram for a set of stars that includes the Sun
Pre–Main-Sequence Evolutionary Tracks Pre–Main-Sequence Evolutionary Tracks
Andrea Palladio, Plan of main floor (piano nobile), Villa La Rotunda. Andrea Palladio, Plan of main floor (piano nobile), Villa La Rotunda.
Targeting female fetuses for abortion has become a main issue of the emerging feminist movement in ... Targeting female fetuses for abortion has become a main issue of the emerging feminist movement in ...
Sequence Series Arithmatic Progression Problem Sequence Series Arithmatic Progression Problem
Video: How proteins function? How do proteins work?

For a complete list of videos, visit our video library