There are as many absorption lines in the solar spectrum as there are elements present in the Sun. (T/F)
Q: A star has a surface temperature of T = 10,000 K and a radius three times that of the Sun, R = 3R…
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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: The magnitude of the solar constant that has a temperature of 5800 k and a radius of 7 * 10^5 km and…
A: Temperature (T) = 5800 Kelvin Radius (R) = 700000 km = 7×108 m Distance (d) = 1.5×1011 m
Q: Let's examine how we know that the Sun cannot power itself by chemical reactions. Using the fact…
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Q: Why is the sun orange?
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Q: Use the luminosity of the sun, 3.83 x 1026 J/s, the total amount of energy it emits each second, to…
A: Let Ls denote the luminosity of the sun. Let E denote the amount of energy radiated by the Sun in…
Q: If one star has a temperature of 5,000 K and another star has a temperature of 8,500 , how much more…
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Q: how big is the sun?
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Q: During the Maunder minimum a. solar brightness dropped slightly b. the average surface temperature…
A: Maunder minimum is a time of reduced sunspot activity.
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: The dust in a molecular cloud has a temperature of about 34 K. At what wavelength (in nm) does it…
A: temperature = T = 34 K wavelength = λmax=?
Q: In a typical solar oscillation, the Sun’s surface moves up or down with a speed of 0.1m/s . If you…
A: Given data *The Sun’s surface moves up or down with a speed is v = 0.1m/s *The given wavelength is…
Q: If you could run 5.9 kilometers at 8.4 km/hr, how much energy would you burn?This activity uses up…
A: Given: Speed v=8.4 km/hr=8.41000m3600s=8.4518m/s, Distance d=5.9km=5.9×1000m=5900m, Rate of energy…
Q: Given that the solar spectrum corresponds to a temperature of 5800 K and peaks at a wavelength of…
A: Wien's displacement law is used to calculate the maximum wavelength emitted by a blackbody at a…
Q: At the surface of the sun, the temperature is approximately 5800 K. What fraction of the energy is…
A: (a) The total energy U of the electromagnetic radiation is given by following expression. Here, h…
Q: Calculate the energy flux density at the average distance of Venus from the Sun rv (energy flux…
A: Energy flux density at the average distance of VenusF=L4πrv2=1370 W/m24π1.082×1013 cm21 cm10-2…
Q: Earth tugs the sun around as it orbits, but it affects the radial velocity of the sun by only 0.09…
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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
Q: What is the wavelength of maximum intensity (in nm) and the total energy emitted (in J/s/m2) by a…
A: By the Wien's law the relation between Temperature (T) and wavelength is given by,
Q: Calculate the total amount of radiative energy per second intercepted by Mars from the Sun using the…
A: Given data: Flux of radiation, Φ=597 W/m2 Luminosity of Sun, Ls=3.8×1026W Distance, D=2.25×1011m
Q: Considering that Earth experiences an average intensity of sunlight of 1330 W/m? and is at a…
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Q: What is the approximate temperature of the sun at its chromosphere ?
A: The chromosphere is the third layer of Sun. It ranges from 400 km to 2100 km above the solar…
Q: How does the temperature of the peak (maximum) wavelength of 41 Cygni (at baseline level) compare…
A: Answer: The temperature of the peak (maximum) wavelength of 41 Cygni (at baseline level) by…
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: When two stars are in the same star system, they can affect each other’s evolution. Two stars in the…
A: Two stars in the same system might evolve at a different pace, depending on their distances in the…
Q: Sunspots appear dark because they are hotter than the sur- rounding gas of the photosphere. (T/F)
A: Sunspots are dark planet-sized regions on Sun's surface. They are created due to magnetic…
Q: From Earth, the Sun appears brighter than any other star because the Sun is the
A: From Earth , the Sun appears brighter than any other star because the Sun is the ______
Q: In the Sub giant phase which of the following is true? O The star is burning He in the core O The…
A: Given : In the Sub giant phase The star is burning He in the core The star is burning He in a shell…
Q: Even though neutral hydrogen is the most abundant element in interstellar matter, it was detected…
A: Interstellar matter is the matter that exists in the space between the stars. It is mostly comprised…
Q: The most abundant element in the Sun is hydrogen. (T/F)
A: Sun is the star at the center of our solar system. It belongs to the G-type main-sequence stars.…
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: If each square cm of the sun's surface radiates energy at the rate of 1.5x 10° cal/s/cm? and…
A: A blackbody is an object that is capable of absorbing all the radiation that falls on it and…
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: Use the Virial Theorem to estimate the temperature in the core of the Sun
A: Definition: Virial theorem states that when a system is in one equilibrium state and changes to…
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: Estimate the rate at which the Sun loses mass (kg/s) due to the solar wind. Assume the solar wind is…
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Q: The Sun has a mass of 1.989 × 10^30 [kg], but only 10% of that mass is available for hydrogen fusion…
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Q: Given that the solar spectrum corresponds to a temperature of 5800 K and peaks at a wavelength of…
A: Given: The temperature of solar spectrum is 5800 K. The solar spectrum peaks at…
Q: Rigel is a bright star in the night sky - its apparent magnitude is 0.12. Venus, when it is at it’s…
A: Write the relationsip between the apparent magnitude, absolute magnitude, and flux ratio. Further,…
Q: Given that the solar spectrum corresponds to a temperature of 5800 K and peaks at a wavelength of…
A: A blackbody is an object that is capable of absorbing all the radiation that falls on it. Black-body…
Q: Why does it take so long for the energy produced in the Sun's core to reach the surface?
A: The main source of energy in stars like our Sun is hydrogen fusion. In this process, hydrogen is…
Q: 80 Sun energy flux: 63 x 10 Wim at the Sun surface 1370 Wim solar constant reaching Earth 342 Wi…
A: Given:
Q: What is the wavelength of maximum intensity (in nm) and the total energy emitted (in J/s/m2) by a…
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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: why does nuclear fusion in the sun only occur near the center?
A: Nuclear fusion is a reaction in which two or more atomic nuclei are combined to form one or more…
Q: Click to see additional instructions Estimate the average particle flux (#/m²-s) at 1 AU. Report…
A: Given Density ρ=3ions per centimetre at 1AU And speed v=600km/s
Q: Why is nearly all of the Sun's energy produced in the inner 1.5% of its volume?
A: Stars are powered by nuclear fusion. In nuclear fusion, two light nuclei will combine to form heavy…
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