How is the blue color of a reflection nebula related to the blue color of the daytime sky?
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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A: Given that Radius of star, R = 2 luminosity of the star ,
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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: 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: Two stars (a and b) in a binary system have apparent V-band magnitudes of 8.0 and 8.4 mag, and B-V…
A: (a) The star with the smaller apparent magnitude in the V-band (i.e., the brighter star) is star A…
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A: As we know, The angular measurements are the divided circle by the scale of a vernier protractor. It…
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A: Given data: Flux of radiation, Φ=597 W/m2 Luminosity of Sun, Ls=3.8×1026W Distance, D=2.25×1011m
Q: at what wavelength (in nm) will it radiate the most energy? Is this a cool or hot star?
A: According to Wien's displacement law The peak wavelength relation is given as Peak wavelength =…
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A: The expression for the distance can be written as m-M=5logd10…
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A: Given : In the Sub giant phase The star is burning He in the core The star is burning He in a shell…
Q: What is the luminosity of a star having three times the radius of the Sun and a surface temperature…
A: The luminosity of a star is a measure of the total amount of energy that is radiated by a star per…
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A: Concept: "The Wien's displacement law states that the wavelength carrying maximum energy is…
Q: Star 1 and star 2 have the same V-magnitude, V = 7.5. However, they have different B-magnitudes, B1…
A: Given data : Star 1 and star 2 V-magnitude, V = 7.5 B-magnitudes, B1 = 7.2 and B2 = 8.5 d2 = 10d1 To…
Q: Suppose the distance to a star is doubled. Then the luminosity of the star is O Remains the same,…
A: Luminosity and apparent brightness are 2 different things. Luminosity is unique property of body and…
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A: in this question discuss the what factors affect to brightness constancy.
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A: Emission nebulae are formed in regions surrounding young stars. When a star is formed in the…
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A: We know that, Sun has radius of 695 x 106 m giving a surface area of 6.09 x 1018 m2 .
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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: In a laboratory, the Balmer-beta spectral line of hydrogen has a wavelength of 486.1 nm. If the line…
A: vr=cλ0-λλ0
Q: As we read in the book, a star that appears to be 1 magnitude brighter will have approximately 2.5…
A: Required : Approximate ratio of the flux.
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: 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: Star 1 and star 2 have the same V-magnitude, V = 7.5. However, they have different B-magnitudes, B1…
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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: 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: Why is the sun the only star that can be seen during the daytime?
A: Sun is having that much of heat which have the capacity to hide all the star which can be seen in…
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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