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

Author Question: Suppose you see two stars: a blue star and a red star. Which of the following can you conclude about ... (Read 58 times)

09madisonrousseau09

  • Hero Member
  • *****
  • Posts: 559
on: Jul 27, 2018
Suppose you see two stars: a blue star and a red star. Which of the following can you conclude about the two stars? Assume that no Doppler shifts are involved. (Hint: Think about the laws of thermal radiation.)
 
  A) The red star is more massive than the blue star.
  B) The blue star is more massive than the red star.
  C) The blue star is farther away than the red star.
  D) The blue star has a hotter surface temperature than the red star.
  E) The red star has a hotter surface temperature than the blue star.

Question 2

According to general relativity, what is a black hole?
 
  A) an object that cannot be seen
  B) a place where light travels slower than the normal speed of light
  C) a place where the strength of gravity is infinite
  D) a hole in the observable universe


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

vickyvicksss

  • Sr. Member
  • ****
  • Posts: 351
Reply #1 on: Jul 27, 2018
Answer to Question 1

D

Answer to Question 2

D


09madisonrousseau09

  • Member
  • Posts: 559
Reply 2 on: Jul 27, 2018
YES! Correct, THANKS for helping me on my review

tuate

  • Member
  • Posts: 332
Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

« previous next »
 

Did you know?

No drugs are available to relieve parathyroid disease. Parathyroid disease is caused by a parathyroid tumor, and it needs to be removed by surgery.

Did you know?

Human kidneys will clean about 1 million gallons of blood in an average lifetime.

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?

Approximately 500,000 babies are born each year in the United States to teenage mothers.

Did you know?

A recent study has found that following a diet rich in berries may slow down the aging process of the brain. This diet apparently helps to keep dopamine levels much higher than are seen in normal individuals who do not eat berries as a regular part of their diet as they enter their later years.

The Sun is the star at the center of the Solar System. The Sun is the star at the center of the Solar System.
Adult blue whale from the eastern Pacific Ocean Adult blue whale from the eastern Pacific Ocean
The dorsal (red) and ventral (blue) body cavities. The dorsal (red) and ventral (blue) body cavities.
Listening to Normal Speech or Its Prosodic Components Functional MRI scans were made while subjects Listening to Normal Speech or Its Prosodic Components Functional MRI scans were made while subjects
A tester that uses a blue liquid to check for exhaust gases in the exhaust, which would indicate a ... A tester that uses a blue liquid to check for exhaust gases in the exhaust, which would indicate a ...
A highway curve of radius 80 m is banked at 45°. Suppose that an ice storm hits, and the ... A highway curve of radius 80 m is banked at 45°. Suppose that an ice storm hits, and the ...
Video: Natural Selection, Species Isolation and Real World Example

For a complete list of videos, visit our video library