Why don't red dwarfs become giant stars?
Q: With a pair of binoculars, the faintest stars that you can see have an apparent magnitude of…
A:
Q: All stars start their lives with the same basic composition. What determines their differences? O…
A: Mass they formed with
Q: What is an emission nebula?
A: The space between stars and galaxies is filled with clouds of gas and dust. These clouds of gas and…
Q: More massive stars form more rapidly. (T/F)
A: Stars are formed from the interstellar medium. The interstellar medium contains hydrogen and helium…
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: Stars begin their life cycle in a O black hole O nebula O nova O supernova
A: Answer:) star begin their life cycle in a nebula
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: Hertzsprung-Russell Diagram Blue or blue w White Vellow Red orange Red Rioe Supergl Beteigeuse Main…
A: The region of main sequence contains large number of stars than any other region. Therefore most of…
Q: All of the single red-dwarf stars that ever formed are still on the main sequence today. (T/F)
A: Main sequence stars are those which are fusing hydrogen to helium in their cores. Almost 90% of the…
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: A proiectile is fired un an incline (Gncline angle
A: Where, vi=initial velocity of projectile.
Q: For each type of stellar explosion, identify its progenitor star
A:
Q: where do hydrogen-buring stars spend most of their time on the H-R Diagram? Is it the main sequence,…
A: Hydrogen burning stars are those stars which burns hydrogen as their dominant fuel. Horizontal…
Q: What critical event must occur in order for a protostar to become a star?
A: A very young star that is yet gathering mass from the parent molecular cloud is called a protostar.…
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: Match the stars to their typical lifetimes on the main sequence. O Instructions 15 solar masses 1…
A:
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: What is the luminosity, in solar units, of a brown dwarf whose radius is 0.1 solar radii and whose…
A: Luminosity of a star or an object is the total amount of energy radiated per second by that object.…
Q: What do you mean by white dwarfs?
A: Given What do you mean by white dwarfs, as following below.
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 massive stars are short lived?
A: A massive star has a shorter life spanthan an average star because of fasterhydrogen fuel…
Q: Two stars have the difference between their apparent magnitudes +5, so their apparent luminosity…
A: The difference between the apparent magnitude is given as m1-m2=+5
Q: What causes a star to move off the main sequence?
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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 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…
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: 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: Why does the orbital period of a binary star depend on its mass?
A: A binary system is formed when two massive astronomical objects start orbiting each other around a…
Q: If a T Tauri star is the same temperature as the sun but is ten times more luminous, what is its…
A: The energy radiated by a star per second is known as its luminosity and is directly proportional to…
Q: What is the color of the stars shown on the diagram that have the lowest surface temperature? O red…
A: Required: Color of the stars,
Q: Star A and Star B are both on the main sequence. Star A is 63 times more luminous than Star B. What…
A:
Q: Sn1604 a supernova in the year 2000 the age then was 396 years calculate the speed of expansion of…
A: Sn1604 a supernova in the year 2000 the age then was 396 years.If Kepler’s supernova expanded ar…
Q: Calculate the gravitational energy released by the Sun.
A: “Since you have asked multiple question, we will solve the first question for you. If you want any…
Q: What is the size of a typical white dwarf? Group of answer choices 1.0 solar radii 0.5 solar…
A:
Q: Consider the following question: How many times bigger than the sun would a cool star (4000K) have…
A:
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: Two stars with the same luminosity form a close binary pair. Show that when they are observed…
A: A star’s magnitude (m) is defined in terms of the star’s flux (F) and the reference flux (F0) as…
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…
Q: Why do old stars have less metal compared to new ones?
A: As per the Big Bang theory, the universe expanded from an initial high-density state. In the…
Q: Sun-like star transitions into a Red Giant __________. Group of answer choices after the planetary…
A: Solution Given dataSun like star transitions into a Red Giant ..........Which option is correct…
Q: Arrange these statements in order according to the Nebular theory 1. X Heating interstellar cloud…
A: Answer is 1.Nearby cataclysmic explosion of supernova occurred 2. Interstellar cloud…
Q: Why do stars tend to form in groups?
A: Space is filled with an interstellar medium that consists of gas and dust particles. The density…
Q: 50,000 20,000 Surface Temperature (C) Would the surface temperature of the stars classified as white…
A: Surface temperature of white dwarfs is around 20000K And for giant it is 2500 to 4000K
Q: A distant Nebula is now 2.35 pc in radius and is expanding at 1100 km/s. Approximately when did the…
A: The rate of expansion of the Nebula is given by the formula,…
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