« previous next »

Author Question: Two stars, Betty and Wilma, are both on the main sequence. Betty is more luminous than Wilma. ... (Read 92 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?

Though methadone is often used to treat dependency on other opioids, the drug itself can be abused. Crushing or snorting methadone can achieve the opiate "rush" desired by addicts. Improper use such as these can lead to a dangerous dependency on methadone. This drug now accounts for nearly one-third of opioid-related deaths.

Did you know?

The first war in which wide-scale use of anesthetics occurred was the Civil War, and 80% of all wounds were in the extremities.

Did you know?

The U.S. Preventive Services Task Force recommends that all women age 65 years of age or older should be screened with bone densitometry.

Did you know?

Medication errors are more common among seriously ill patients than with those with minor conditions.

Did you know?

Famous people who died from poisoning or drug overdose include, Adolf Hitler, Socrates, Juan Ponce de Leon, Marilyn Monroe, Judy Garland, and John Belushi.

Four main models that describe the relationship between ecosystem function and biodiversity. Four main models that describe the relationship between ecosystem function and biodiversity.
Rising and Setting of Stars at the Equator Rising and Setting of Stars at the Equator
Genes are composed of a sequence of nucleotides in a DNA molecule Genes are composed of a sequence of nucleotides in a DNA molecule
8.The following table contains DNA-sequence information compiled by Marilyn Kozak (1987). The ... 8.The following table contains DNA-sequence information compiled by Marilyn Kozak (1987). The ...
Main mechanism of carbon dioxide transport and exchange. A lesser amount of CO2 travels to the lungs Main mechanism of carbon dioxide transport and exchange. A lesser amount of CO2 travels to the lungs
A taproot system consists of a large main root together with its lateral branchings A taproot system consists of a large main root together with its lateral branchings
Video: Bacteriophage (Virus) - Mice Experiment

For a complete list of videos, visit our video library