Why do stars tend to form in groups?
Q: All stars start their lives with the same basic composition. What determines their differences? O…
A: Mass they formed with
Q: A star has a surface temperature of T = 10,000 K and a radius three times that of the Sun, R = 3R…
A:
Q: Why are metals less abundant in older stars than in younger stars?
A: Answer: The metals which basically are non hydrogen and helium material are produced or created in…
Q: Why is the sun orange?
A:
Q: why is the sun hot?
A: Sun can be defined as the star at the centre of the solar system, it is also called a heavenly body…
Q: Which elements are created in stellar nucleosynthesis? (Select all that apply) - oxygen - helium…
A: Among the elements listed, hydrogen and helium were created during big band and the rest of the…
Q: For each type of stellar explosion, identify its progenitor star
A:
Q: Star A has a temperature of 3000K; Star B has a temperature of 5000K; Star C has a temperature of…
A: Given value--- temperature of star A = 3000 K. temperature of star B = 5000 K. Temperature of…
Q: If a star is about 10 times the earth’s sun, how will it change when it’s about to die? a) Explode…
A: Option d is correct answer
Q: What size star is the sun? O supergiant O medium O giant O white dwarf
A: The sun size is about 696340 km in radius and it's mass is 1.989*10^30 kg.
Q: Star A has an effective temperature of TA = 7200 K and a radius of RA = 2.04R , asecond star, Star…
A: Let LA be defined as the luminosity of star A and LB be defined as the luminosity of star B. The…
Q: What is the temperature of a star emitting light with a peak wavelength of 7,080 angstroms? T=…
A: Given : λmax = 7080 angstroms = 7080*10-10 m. From Wien's law the temperature of star is T =…
Q: Explain how hydrostatic equilibrium and the star's internal structure are linked.
A: It is to be explained that how the hydrostatic equilibrium and the star's internal structure are…
Q: The percentage of helium used immediately during a star’s helium flash phase is
A: It is a very brief phase
Q: Describe the relationship between the concept of hydrostatic equilibrium and the interior structure…
A: On each and every star in the astrophysics, there are always two forces acting. The first force is…
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…
Q: Why does hydrogen, which is abundant in the sun's atmosphere, have relatively weak spectral lines,…
A: Atmos has electrons in different energy levels. Spectral lines are formed when electrons make…
Q: What causes a star to move off the main sequence?
A:
Q: Star 1 and star 2 have the same V-magnitude, V = 7.5. However, they have different B-magnitudes, B1…
A: Given data : Star 1 and star 2 V-magnitude, V = 7.5 B-magnitudes, B1 = 7.2 and B2 = 8.5 d2 = 10d1 To…
Q: Star A’s luminosity is four times greater than Star B’s. Both stars have the same surface…
A:
Q: Consider three main sequence stars: Star A is 12000 K, Star B is 6000 K, Star C is 3000 K. What are…
A: Given, Star A = 12000 K temprature Star B = 6000 K temprature Star C = 3000 K temprature So the…
Q: Why do distant stars look redder than their spectral types suggest?
A: The pace is mostly empty but there are areas of large density of the interstellar medium. It…
Q: What is hydrostatic equilibrium in stars.
A: The interstellar medium is mostly made of hydrogen. When the mass of the interstellar medium becomes…
Q: If an open cluster contains 450 stars and is 21 pc in diameter, what is the average distance between…
A: Given Number of stars in an open cluster (n) = 450 Diameter of the cluster Dclu = 21 pc…
Q: Why don't red dwarfs become giant stars?
A: Red dwarf stars or M-type stars are small stars with a mass of 0.08 to 0.6 times the mass of the…
Q: Why do metal-poor stars have a wider range of orbital shapes than metal-rich stars like the sun?
A: Stars are classified into two categories. Population I and Population II. Population I stars are…
Q: In the laboratory, the Balmer alpha line has a wavelength of 656.3 nm. If the line in a star’s…
A: Rest wavelength of the first balmer line of hydrogen is 656.3 nm. Star spectrum appears the…
Q: The figure below shows pairs of spectra with a set of spectral lines. The top spectrum always shows…
A: Solution: Redshift: When an object moves away from us, the light is shifted to the red end of the…
Q: Why do two different gasses always have different spectral signatures?
A: Given Why do two different gasses always have different spectral signatures, as following below.
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
Q: In a laboratory, the Balmer-beta spectral line of hydrogen has a wavelength of 486.1 nm . If the…
A: Wavelength of (λ°) = 481.6 nm Difference of wavelength ∆ λ = λ- λ° = 486.1- 485.8 = 0.3 nm Speed of…
Q: What is the luminosity of a 4-solar-mass main-sequence star?
A: The luminosity of a star is the amount of energy that it radiates per second. It can be considered…
Q: A star has a luminosity (power output) of 9.2x1026 W and a diameter of 6.1x108 m. What is its…
A:
Q: Why does a star's life expectancy depend on its mass?
A: Stars are formed due to the gravitational collapse of interstellar gas. This collapse is…
Q: In which component of the interstellar medium do new stars form? O molecular clouds O HII Intercloud…
A: Interstellar medium is the medium between matter and radiation. The matter are gases (gas cloud),…
Q: Describe the principle of hydrostatic equilibrium as it relates to the internal structure of a star.
A: Stars are formed due to the gravitational collapse of interstellar gas and fusion reaction. The…
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…
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