This topic contains a solution. Click here to go to the answer

Author Question: Sirius is a star with spectral type A and Rigel is a star with spectral type B. What can we ... (Read 106 times)

jerry coleman

  • Hero Member
  • *****
  • Posts: 570
Sirius is a star with spectral type A and Rigel is a star with spectral type B. What can we conclude?
 
  A) Sirius has a higher core temperature than Rigel.
  B) Sirius has a higher surface temperature than Rigel.
  C) Rigel has a higher surface temperature than Sirius.
  D) Rigel has a higher core temperature than Sirius.

Question 2

As with stars, binary galaxy pairs are useful in finding their total mass.
 
  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

softEldritch

  • Sr. Member
  • ****
  • Posts: 334
Answer to Question 1

C

Answer to Question 2

TRUE



jerry coleman

  • Hero Member
  • *****
  • Posts: 570
Both answers were spot on, thank you once again



softEldritch

  • Sr. Member
  • ****
  • Posts: 334

 

Did you know?

The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.

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 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?

Many of the drugs used by neuroscientists are derived from toxic plants and venomous animals (such as snakes, spiders, snails, and puffer fish).

Did you know?

All adults should have their cholesterol levels checked once every 5 years. During 2009–2010, 69.4% of Americans age 20 and older reported having their cholesterol checked within the last five years.

For a complete list of videos, visit our video library