Calculate the luminosity of Sirius A in solar units.
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A: In this problem, it is asking about the brightest star.
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A: The sun size is about 696340 km in radius and it's mass is 1.989*10^30 kg.
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A: Let LA be defined as the luminosity of star A and LB be defined as the luminosity of star B. The…
Q: If the Sun expanded to a radius 10 times its current size and its temperature decreased by 55%, how…
A: Given Radius of sun increased by 10 times Temp decreased buy 55% Tf = 0.45 Ti
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A: Given : λmax = 7080 angstroms = 7080*10-10 m. From Wien's law the temperature of star is T =…
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Q: A star is observed to be thrice the size of the Sun with temperature of 1.3Tsun. Estimate its…
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A: The chromosphere is the third layer of Sun. It ranges from 400 km to 2100 km above the solar…
Q: Sirius A has a luminosity of 26 Lsun and a surface temperature of about 9400 K. Part A What is its…
A: Given: The luminosity of Sirius is 26Lsun. The surface temperature is 9400 K.
Q: Why does the luminosity of a star depend on both its radius and its temperature?
A: Luminosity is the radiant power emitted by star. The luminosity is measured in Watt or Joules per…
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A: Solution: The luminosity of state is given by the following formula, L=4πR2σT4…
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A: Luminosity of a star depends on both temperature and radius. L ∝ R2 T4
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Q: What is the Sun's energy output (luminosity)? Group of answer choices About 4 x 1026 Watts About a…
A: We know that, Sun has radius of 695 x 106 m giving a surface area of 6.09 x 1018 m2 .
Q: If the Sun expanded to a radius 160 times its current size and its temperature decreased by 55%, how…
A: SOlution: Given that Rnew = 160R Tnew = (1-0.55)T Tnew = (0.45)T
Q: Sirius, the brightest star in the sky, is a main sequence star, as is the Sun, but Sirius has a…
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Q: Hertzsprung-Russell Diagram Blue or blue-white White Yellow Red-orange Red O Rigel Supergiants…
A: Option a is the right answer Red color of the stars have lowest surface temperature
Q: If a certain star is 4 times as hot as the sun and is 10000 times brighter than the sun, calculate…
A: Given, Temperature of star, TA=4xTE, Luminosity of star, LA=10000x LE.
Q: In a laboratory, the Balmer-beta spectral line of hydrogen has a wavelength of 486.1 nm. If the line…
A: vr=cλ0-λλ0
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A: “Since you have asked multiple question, we will solve the first question for you. If you want any…
Q: A star has a luminosity (power output) of 9.2x1026 W and a diameter of 6.1x108 m. What is its…
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Q: a star with a radius of 12 that of the sun but a surface temperature of 0.5 times that of the sun be…
A: The luminosity of a star can be given by Stefan-Boltzmann's law as L=σAT4σ is Stefan-Boltzmann…
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Q: The white dwarf star Sirius B has a luminosity of 0.025 L⊙. If you were 1 AU from Sirius B, would…
A: Given,Temperature, Apparent magnitude of the sun, The luminosity of the star sirius B, The…
Q: Sirius is the brightest star in the sky (but is located in the Southern hemisphere). It has a…
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Q: the Sun?
A: Given: To explain the star which is white supergiant star also brightest and hottest than the Sun…
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