QUESTION 8Which of the following will occur to our Sun at some point in the future? (Select all that apply)The sun will explode as a supernovaThe core of the sun will become a white dwarfThe core of the sun will become a neutron starThe core of the sun will become a black holeV The sun will become a red giant

The sun does not have that much mass to be exploded as a supernova.

Answered: Which of the following will occur to…

Stars and Galaxies (MindTap Course List)

10th Edition

ISBN:9781337399944

Author:Michael A. Seeds

Publisher:Michael A. Seeds

Chapter13: The Deaths Of Stars

Section: Chapter Questions

Problem 2SP

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The luminosity of the Sun is 3.83 × 1026 W. This energy comes from fusion during which some matter is turned into energy. How many tons of matter are destroyed each second to maintain this luminosity? Bear in mind that 1 ton has a mass of 907 kg and that 1 W = 1 J/s. Amount of matter destroyed each second = _____ tons
The Local Bubble is: a. a region of low density intersteller gas extending several hundred LY around the Sun b. a region around any exploding star where material is expanding from the explosion c. the region around very hot stars where hydrogen is ionized
Which of the below is a possible evolutionary outcome for the Sun (given in the correct chronological order). a) planetary nebula, red giant, white dwarf b) Red giant, planetary nebula, white dwarf c) Red giant, planetary nebula, neutron star d) Red giant, neutron star with simultaneous supernova explosion e) Red giant, black hole with simultaneous supernova explosion
When the Sun becomes a red giant, it's luminosity will be 2000 times its current value. The solar flux at Earth will also increase by a factor of 2000. Neglecting the greenhouse effect, the surface temperature of the earth is determined by thermal equilibrium: the flux of radiation absorbed equals the flux of radiation emitted. This means the Earth's surface flux must also increase by a factor of 2000. If the current average surface temperature is 58 degrees F, what will the average surface temperature be when the Sun is a red giant. Express your answer in units of degrees Fahrenheit. [Hint: Recall that the Stefan-Boltzmann law says that the flux F emitted by a blackbody is related to its surface temperature T (measured in Kelvins) is F=σT4 . Use this law in the form of a ratio, expressing T in Kelvins. Then convert back to Fahrenheit.]
The Orion Nebula is a gas-rich region in which stars are being born. The nebula is at a distance of about 1344 lyr from Earth.Suppose you observe a star in the Orion Nebula to have an apparent magnitude of 6.75. Calculate the absolute magnitudeof the star. Also calculate the luminosity of the star in units of the solar luminosity (knowing that the absolute magnitude ofthe Sun is 4.8).
If the nuclear fusion reaction of converting 4 H → He occurs at an efficiency of 0.7%, and that mass is converted into energy according to the equation E = mc2, then estimate the Main Sequence lifetime of the Sun (spectral type G2) in years if the Sun (⊙) has a surface luminosity L⊙ = 3.839°ø1033 erg. Assume the Sun’s core (10% of the total mass) is converted from H into He. The Sun’s mass is M⊙ = 1.9891 °ø 1033 g.
of a star occur main-sequence star, planetary nebula, white dwarf, protostar, red giant.
given that the suns lifetime is about 10 billion years, estimate the life expectancy of (A) a 0.2-solar mass, 0.01-solar luminosity red dwarf
Which letter on the diagram represents Red Giants?
Select all of the statements about the main sequence stage in the life of a star that are TRUE: All stars spend the majority of their lives in the main sequence stage. Most stars lose a significant amount of mass while they are on the Main Sequence. Different stars spend a different amounts of time (number of years) in the main sequence stage, depending on the characteristics they were born with. Main sequence stars are rare in the Galaxy, so we are lucky to be living around one. During the main sequence stage, energy to power the star is provided by the fusion of hydrogen.
if the nuclear fusion reaction of converting 4 H → He occurs at anefficiency of 0.7%, and that mass is converted into energy accordingto the equation E = mc2, then estimate the Main Sequence lifetime of the Sun (spectral type G2)in years if the Sun (⊙) has a surface luminosity L⊙ = 3.839×1033erg. Assume the Sun’s core (10% of the total mass) is convertedfrom H into He. The Sun’s mass is M⊙ = 1.9891 × 1033 g
In about 5 billion years, the sun will evolve to a red giant. Assume that its surface temperature will decrease to about half its present value of 6000 K, while its present radius of 7.0108 m will increase to 1.51011 m (which is the current Earth-sun distance). Calculate the ratio of the total power emitted by the sun in its red giant stage to its present power.

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