In the sky, you see a red star and a blue star. Which one is hotter?...

Question

Question

In the sky, you see a red star and a blue star. Which one is hotter?

A. The red star

B. They are probably the same temperature

C. The blue star

D. The answer will depend on how far away the stars are

Answer 1

Answer #1

We know amt= constant. clearly In confent and > Ablue Tred <Tolue - Blue star is holter . C. The blue star

Answer 2

Similar Homework Help Questions

Suppose you go outside and look at three stars. Star A is blue, Star B is...

Suppose you go outside and look at three stars. Star A is blue, Star B is white, and Star C is red. Which star is the hottest and which star is the coldest? Group of answer choices Star A is the hottest and Star B is the coldest. Star B is the hottest and Star A is the coldest. Star B is the hottest and Star C is the coldest. Star A is the hottest and Star C is the...
You see a bright star In the night sky—how do you determine if it is a...

You see a bright star In the night sky—how do you determine if it is a star or planet?
Which of the following statements about red giant stars are true? (Select all that apply.) Red...

Which of the following statements about red giant stars are true? (Select all that apply.) Red giant stars are less luminous than main sequence stars of the same temperature. Red giant stars tend to be more luminous than main sequence stars of the same temperatures because they are larger in size. Red giant stars are less luminous than main sequence stars because fusion happens more rapidly in main sequence stars. A red giant star of a given temperature is more...

(a) The observed parallax of Sirius, the brightest star in the sky, is 0.375 arcseconds. How...

(a) The observed parallax of Sirius, the brightest star in the sky, is 0.375 arcseconds. How far away is it in parsecs? In light years? (b) The Hipparcos spacecraft could measure parallaxes as small as 0.001 a How distant is the furthest star for which we can measure parallax? How does this distance compare to the size of the galaxy!
Suppose you find a binary star system in which the more massive star is a red...

Suppose you find a binary star system in which the more massive star is a red giant and the less massive star is a main-sequence star. Would you expect that mass transfer between the stars has played an important role in the evolution of these stars? Explain your reasoning.
Sirius The brightest star in the night sky is Sirius, which is at a distance of...

Sirius The brightest star in the night sky is Sirius, which is at a distance of 8.30×1016 m, when we look at this star, how far back in time are we seeing it? Express your answer in years. Submit Answer Tries 0/15

The star Rigel, blinks in a blue color, whose approximate wavelength is 400 nm and the...

The star Rigel, blinks in a blue color, whose approximate wavelength is 400 nm and the star Betelgeuse, has a reddish color, whose approximate wavelength is 700 nm. a) Estimate the surface temperature of Rigel in Kelvin. b) Estimate the Betelgeuse surface temperature in Kelvin degrees c) How many times is one of the stars cooler than the other? Which is colder?
1) For a star that is moving away from the Earth, a) the spectral lines of...

1) For a star that is moving away from the Earth, a) the spectral lines of the star are much narrower than the spectral lines of an identical star that is not moving towards or away from the earth. b) the spectral lines of the star are shifted towards the blue end of the spectrum compared to an identical star that is not moving towards or away from the earth. c) the spectral lines of the star are shifted towards...
A star is moving toward the earth far away in space. The light of the star...

A star is moving toward the earth far away in space. The light of the star experiences a a) sonic boom b) standing wave c) blue shift d) red shift

123 Binary Stars 7) Imagine that you are watching a binary star system chtas they eaomntar....

123 Binary Stars 7) Imagine that you are watching a binary star system chtas they eaomntar. And I type main sequence star and a B-spectral type main sequence sta orbit. During this time, you are able to see the starst of the M-S mvedstars At another time, you see the B-spectral type star in at an entirely different time, you see that the B-spectretches showing M-spectral type star. In the space below, draw three would look like at the three...