Gas clouds that form stars are pulled together by which of the following?
Q: What are the different kinds of thermonuclear fusion in main-sequence stars and at what temperatures…
A: Hydrogen fusion takes place in the main-sequence stars. The star turns on and becomes a main…
Q: The two types of cycles proposed in the stars for fusion are ________ a) p-p cycle and p-e cycle…
A: Option b
Q: Life on Earth wouldn't be possible without supernovae. Why?
A:
Q: Which type of fusion reaction supports stars for the longest time? Group of answer choices hydrogen…
A: The hydrogen to helium fusion reaction supports stars for the longest time. Because, the force of…
Q: Consider again the text example of a thin plastic rod of length L that has a positive charge Q…
A:
Q: An important part of the lifecycle of galaxies like the Milky Way is the self regulation of…
A: Required : The correct choice.
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: A young star of several solar masses is called as ____________ a) LBV1806-20 b) Mira c) Cepheid…
A: To find: young star of several solar masses is called as
Q: The traditional theory of the formation of our galaxy CANNOT explain a. the existence of the disk…
A: a. The existence of the disk of the galaxy
Q: Nuclear fusion occurs during most of a star's life O True False
A: Answer :- ---------- True Nuclear fusion occurs during most of a stars life. Because It is the…
Q: Explain why the sky is blue and how that relates to reflection nebulae.
A: Dispersion. Despersion is a phenomena in which when light passes beteen 2 particle it disperses.
Q: Suppose that stars were born at random times over the last 10e10 years. The rate of star formation…
A:
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: Describe each of the following nebulae and how they can be observed: HIl region Cold hydrogen gas…
A: (1) HII region (2) Cold hydrogen gas (3) Dust clouds
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: A typical dense core of an interstellar gas cloud has a diameter of 0.2 pc and a mass of 2 solar…
A: The diameter of the gas cloud is defined as 0.2 pc. Therefore, the radius of the gas cloud will be…
Q: Neutron Star Accretion Disk. If the accretion disk around a 2.25-solar-mass neutron star has a…
A:
Q: Disk population stars have I. circular orbits in the plane of the galaxy II. randomly…
A:
Q: What factors resist the contraction of a cloud of interstellar matter?
A: Interstellar matter is defined as the space between the stars' systems in the galaxy. It is made…
Q: During the formation of stars smaller masses may also form and be attracted by a larger mass to…
A: →Planets are born from the clouds of gas and dust that orbit new stars.
Q: What elements made up most of the nebulaein the very young Universe?
A: We have to find out what elements forms the early nebulae
Q: Stars formed after the Big Bang had cooled down. From globular cluster dating and from stellar…
A: All of the matter and energy in the universe was once confined to a singularity with infinite…
Q: Why massive stars are short lived?
A: A massive star has a shorter life spanthan an average star because of fasterhydrogen fuel…
Q: ar formation, themselves f
A: Newton formulated equations which showed the gravity behavior. He determined the force of gravity…
Q: What is the name for the spherical cloud of thinly scattered stars and globular clusters that…
A: Given : What is the name for the spherical cloud of thinly scattered stars and globular clusters…
Q: If the hottest star in the Carina Nebula has a surface temperature of 51,000 K, at what wavelength…
A: Concept: "The Wien's displacement law states that the wavelength carrying maximum energy is…
Q: What is degenerate matter and why is it important to the study of stars?
A: Degenerate matter is usually modeled as an ideal Fermi gas (an ensemble of non-interacting…
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: A vertically upward. What is the magnetic field due to this current at a point P, 20 cm due north of…
A: Current in the wire I = 50 A Distance of point P from wire r = 20 cm = 0.20 m To find Magnetic…
Q: If our Sun were surrounded by a cloud of gas, would this cloud be an emission nebula? Why or why…
A: Emission nebulae are formed in regions surrounding young stars. When a star is formed in the…
Q: The nebula formed when a dying sun sized star begins to shed its outer layer is called as…
A: D
Q: There are 200000 AU radius clouds will form a star of 10 solar masses and the 150000 AU radius…
A:
Q: suppose a planetary nebula is 2.8 pc in diameter, and doppler shifts in its spectrum show that the…
A: Given information: The diameter of the nebula (D) = 2.8 pc = 2.8 (3.1×1013 km) = 8.68 ×1013 km The…
Q: The figure below shows the spectra of two galaxies A and B.
A: 1. According to the figure Galaxy A has a high relative flux density which shows it has a dense…
Q: MODULE: From the Universe to the AtomTOPIC: Origins of the Elements (II)QUESTION:Part a) Explain why…
A: Part A:In a star cluster every star is expected to be formed from the same cloud of interstellar gas…
Q: The first stars to form in our galaxy a. had circular orbits. b. had highly elliptical…
A: Population 1 stars are the newer and younger stars.
Q: Can i get help with this three questions about solar masses : 1.What is the significance of 8 solar…
A: 1.When a star's mass exceeds 8 solar masses, it must undergo a ferocious type II supernova core…
Q: planetary nebula expands at 38 km/s. How far will it expand (in km) in 3 million years?
A: Here given nebula is expanding with given speed. As in 1 sec nebula expands 38 Km, In 3 million…
Q: A planetary nebula expands at 32 km/s. How far will it expand (in km) in 0.6 million years?
A: Expansion rate of the Nebula: It can be defined as the distance up to which the nebula expands in a…
Q: a)What is a neutron star? B)How are they formed? C)Will our Sun become a neutron star? Why or why…
A: a) A neutron star is a core which is formed from the collapsed super giant stars which had a total…
Q: Based on what you know about main-sequence stars, select all of the correct statements from the…
A: Required : Correct statements .
Q: Hotter, more massive stars are virtually absent from globular clusters. What does this tell us?…
A: Globular clusters are clusters of stars, that are nearly symmetrical and round shaped clusters.…
Q: why are Cepheid variable stars good distance indicators? What about supernovae?
A: Named after delta-Cephei, Cepheid Variables are the most important type of variable because it has…
Q: Based on what you know about the interactions between stars and other interstellar media, select all…
A: Interstellar space and formation of stars Interstellar space is the space between stars. This space…
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