Why does hydrogen, which is abundant in the sun's atmosphere, have relatively weak spectral lines, while calcium, which is not abundant, has very strong spectral lines?
Q: Do gaps emerge between photons when a star's light stretches out and weakens?
A: Do gaps emerge between photons when a star's light stretches out and weakens?
Q: Suppose a certain star has a temperature of 10,000 Kelvins (K). It will emit light of many different…
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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: Why is the sun orange?
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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: Two stars of the same diameter or observed to have surface temperatures of 4000 Kelvin and 16,000…
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Q: What property of a star had a greater effect on the amount of light emitted—its temperature or its…
A: A very small increase in the temperature of star can significantly increase the energy emitted per…
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 sun is the only star whose size we can easily measure directly; astronomers therefore estimate…
A: Given, Photon Energy =2.4eVWe know the term Luminosity, The term, Luminosity is an absolute measure…
Q: Why is being able to determine a distance form just an angular measurement important? Also why is…
A: As we know, The angular measurements are the divided circle by the scale of a vernier protractor. It…
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: 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: Imagine that you are observing a star and you find the wavelength of peak emission for the star to…
A: In this question we have to find the wavelength of peak emission. Please give positive feedback if…
Q: Why does the spectrum of most stars (including the Sun) show absorption lines in which light is…
A: Solution: Given: Why does the spectrum of most stars (including the Sun) show absorption lines in…
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: explain how emission and absorption involve semiclassical physics?
A: Introduction: When the atom absorbs a photon from the light of proper frequency, it goes to 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: Q / which type of spectral line broadening is less important compared to other type
A: The problem is based on spectral lines. A spectral line is a dark or bright line in an otherwise…
Q: From the HR diagram above, we could determine that the star Barnard's Star has a temperature 3.03E+3…
A: Solution: The luminosity of state is given by the following formula, L=4πR2σT4…
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 the atmosphere were twice as thick as it currently is (extending farther into space), what effect…
A: If the atmosphere were twice as thick as it currently is ( extending farther into space ) , the sky…
Q: A star with a mass like the Sun which will soon die is observed to be surrounded by a large amount…
A: Infrared bands are used in identifying dim, cool stars because they can slice through the stellar…
Q: Besides using the peak wavelength emitted in its blackbody curve, how can a star’s spectrum tell you…
A: Introduction: A blackbody is a theoretical or model body that absorbs all radiation falling on it,…
Q: What is the Sun's energy output (luminosity)? Group of answer choices About 4 x 1026 Watts About a…
A: We know that, Sun has radius of 695 x 106 m giving a surface area of 6.09 x 1018 m2 .
Q: if gas cloud in the image crosses in front of the star, and the gas cloud and star have different…
A: A gas cloud has a lot of hydrogen in it, which abosrbs the UV light emitted by a star. When UV light…
Q: Star A has a temperature of 5,000 K. How much energy per second (in J/s/m2) does it radiate from a…
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Q: At what wavelength does the human body emit most of its light? (Assume body temperature is 98.6…
A: λ=b/T b=2.89*10-3 m-K T(in kelvin)=(32°F − 32) × 5/9 + 273.15 = 310.15 K λ=0.00289/310.15 =…
Q: The figure below shows the spectra of two stars on the same scale (Star A = red line; Star B = green…
A: According to Hubble's law, velocity of recession of star from our earth is directly proportional 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: Star A has a temperature of 5,000 K and Star B has temperature of 6,000 K. At what wavelengths (in…
A: Temperature of star A = 5000 k temperature of star B = 6000 k
Q: The above spectrum is most plausibly produced by which kind of object? Select one alternative:
A: Required : Correct choice.
Q: In the graph below, the yellow region shows the AM 1.5 solar spectrum. The area indicated by the…
A: (a) Given: When λ=250 nm and 1000 nm, Pλ=1×109 Wm-2m-1. When λ=1000 nm and 2000 nm, Pλ=0.25×109…
Q: A star has a luminosity (power output) of 9.2x1026 W and a diameter of 6.1x108 m. What is its…
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Q: If a star has a surface temperature of 20,000 K (2.00 × 104 K), at what wavelength will it radiate…
A: For calculating the wavelength emitted by a hot body consider it as a blackbody. A blackbody is an…
Q: Two stars have the same diameter and are at the same distance from us (but in different parts of the…
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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: 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: The coolest stars are usually blue in color O True O False
A: Given statement : " the coolest stars are blue in colour"
Q: 1. Spectral signatures can be described using luminosity values in different spectral regions. UV…
A: Yes, it is possible to separate the different categories based on the values in given table because…
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…
Q: Which of the following statements are TRUE about the Sun's spectrum, which is shown in th image?
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