What is the luminosity of a 4-solar-mass main-sequence star?
Q: About how long, in years, will a 0.4-solar-mass star spend on the main sequence?
A:
Q: All stars start their lives with the same basic composition. What determines their differences? O…
A: Mass they formed with
Q: In a binary star system, the average separation between the stars is 4.0 AU, and their orbital…
A:
Q: Which of the following is most likely to occur when mass is continually added to a 1.5 solar mass…
A:
Q: What star is a white dwarf that is much more dim and hotter than the sun. and which type of stars…
A: 1.carbon-oxygen white dwarfs 2. hydrogen- fusing white dwarfs 3. Sirius B 4. Procyon B 5. Stein 2051…
Q: Which of the following is NOT the result of the death of a massive star? Select one alternative:…
A: Hypernova is the type of phenomenon that happens when a massive star collapses into this and results…
Q: 4. Suppose we observe a binary star system in which one star is much more massive than the other and…
A: Mass of larger star are M = v2RGWhere v = 104m/sR = 1013mG = 6.67×10-11m3/kg.s2so M = (…
Q: Can children be used to generate electricity? Consider turning a swing into an electric generator by…
A:
Q: Effective Temperature (K) 25,000 10,000 -10 6,000 3,000 10 102 A +10- D 10-2 +15 B A 104 M F…
A: The Hertzsprung Russell diagram is used to plot the temperature of stars with their luminosity.…
Q: of a star occur
A: Possible stages of a star that occurs are as follows:
Q: Suppose a star has the same luminosity as our Sun (3.8x1026watts3.8x1026watts) but is located at a…
A: as per our guidelines, we can answer only first question. please resubmit rest questions for…
Q: The mass-luminosity relation describes the mathematical relationship between luminosity and mass for…
A: L/Lo = (M/Mo )3.5 here the luminosity is to be found in terms of Lo M = 4Mo
Q: Which stars are associated with a planetary nebula? black holes, neutron star's, white dwarf or main…
A: Required : What are planetary nebula associated with.
Q: If a stellar remnant is in between 0.4 and 1.4 solar masses, the resulting object will be a a.…
A: If a stellar remnant is in between 0.4 and 1.4 solar masses, the resulting object will be a white…
Q: This star has a mass of 3.3 MSun. What is the main sequence lifetime of this star? You may assume…
A:
Q: A star is observed with a surface temperature of 3,000 K and a luminosity of 100,000 solar…
A: Given , Temperature = 3000 K Solar Luminosity = 100,000 Now , mass and luminosity are related by…
Q: If a star is located at 62.5 pc and has an apparent magnitude of 6 what is it absolute magnitude?
A: The brightness of a star is determined by its composition and distance from the Earth. There are two…
Q: Put the steps of the life cycle of a star in order.
A: Required : Steps involved in star cycle.
Q: What are the approximate spectral type, temperature, absolute magnitude number, and luminosity of…
A: Required : Spectral type, absolute magnitude, temperature and luminosity of star E.
Q: For each type of stellar explosion, identify its progenitor star
A:
Q: What is the life expectancy of a 2-solar-mass star?
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Q: A newly discovered bright star has a luminosity of 78.4×1026 W. What is its temperature if it has a…
A:
Q: What is the life expectancy (in years of a 19M main-sequence Star? What is the life expectancy (in…
A:
Q: What is the lifetime on the main sequence of a 2-solar-mass star? a. 1.8 × 1011 years b.…
A:
Q: Calculate the luminosity of an 8 solar mass star.
A: The luminosity of a star is the amount of energy that it radiates per second. It can be considered…
Q: Giant and supergiant stars are 10 to 1,000 times larger in diameter than the sun and a. are half…
A: Given statement : "Giant and supergiant stars are 10 to 1,000 times larger in diameter than the…
Q: A concave spherical mirror can be used to project an image onto a sheet of paper, allowing the…
A: Given:- q = 2 p
Q: mass–luminosity relation
A: The Answer to the above statement can be outlined as follows:-
Q: If parallax of a star is 0.22 arc-seconds and its apparent brightness is 50 x 10-6 W/m2 . What is…
A: Given: Apparent Brightness,b=50×10-6W/m2Parallax of star,p=0.22arc-secondsDistance to the…
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: A 2-solar-mass star on the main sequence would have a luminosity of approximately ____________ solar…
A: Given A 2-solar-mass star on the main sequence would have a luminosity of approximately, as…
Q: The chemical abundance of population I stars a. indicates that they were formed before the…
A: Population I star consist of sun and tend to be hot, young, luminous and focused in the spiral…
Q: Which of the following is least reasonable regarding the mass of stars? Group of answer choices…
A: Stars are of different sizes and they have their own set of characteristics based on multiple…
Q: The percentage of helium used immediately during a star’s helium flash phase is
A: It is a very brief phase
Q: Which main-sequence star would be the least luminous? a. A b. B c. F d. G e. K
A: Answer:) option(a) A alpha century A is least luminous because its absolute magnitude (+4.4) which…
Q: Suppose a star has a luminosity of 7.0x1026 watts and an apparent brightness of 4.0×10-12 watt/m?.…
A: Luminosity of star (L) = 7×1026 watt Apparent brightness (AB) = 4×10-12 Wm2
Q: Which main-sequence star would be the least luminous? a. G1 b. G5 c. G9 d. F0 e. F3
A: Given:Which main-sequence star would be the least luminous.Now, Main sequence stars (V) Spectral…
Q: . The spectrum of Star A peaks at 700 nm. The spectrum of Star B peaks at 470 nm. We know nothing…
A:
Q: Consider two stars on the main sequence, A and B. Star A has a mass of Мо Star B has a mass of 0.2…
A: Solution attached in the photo
Q: A turnoff point corresponding to the oldest star cluster would occur at what spectral…
A: Turnoff point in HR diagram is the point where the star leaves the main sequence branch
Q: What causes a star to move off the main sequence?
A:
Q: Main sequence star A is 5 times as massive as main sequence star B. How do the main sequence…
A: Main sequence stars are those which fuse hydrogen atoms in their core to form helium. They have a…
Q: Explain how some stars form in binary systems.
A: There are number of ways stars can be formed in binary systems. They are discussed below.
Q: What is the mass of a star with a main-sequence lifetime of 4 billion years? 17 X solar masses
A: According to stellar theories & observations the average lifetime of main-sequence stars has…
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