An aurora borealis (similar to the northern lights) takes place in the upper atmosphere of the polar regions of the earth. The following spectrum was observed when light from the upper atmosphere during the aurora borealis was analyzed. This spectrum was then compared with spectra from three gases. Unknown planet Gas 1 Gas 2 Gas 3

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: During the Maunder minimum a. solar brightness dropped slightly b. the average surface temperature…

A: Maunder minimum is a time of reduced sunspot activity.

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A: Required : Which of the following layers of the Sun can be seen with some type of telescope.

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Q: The figure shows a very simplified version of the structure of the Sun. For each statement below…

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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: 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: 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: In the Sub giant phase which of the following is true? O The star is burning He in the core O The…

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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: 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…

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A: Apparent Magnitude The apparent magnitude of a star or a galaxy is the measure of how bright the…

Q: If our Sun were surrounded by a cloud of gas, would this cloud be an emission nebula? Why or why…

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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: 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: Box 17-4 Suppose a star experiences an outburst in which its surface temperature doubles but its…

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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: Stellar Classification and H-R Diagram Placement (40 points available). a. Where is your star…

A: ..

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A: Answer : - option D is correct. Explanation It is absorption because it is continuous spectrum,…

Q: In class we found an expression for the 'garden hose angle', ψ, and showed it had a typical value…

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Q: You are trying to take an image of a particular star with apparent magnitude m=10, and need to…

A: Given: m=10 diameter=0.07 t=79 min

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: How hot is the sun?

A: Answer Sun is the largest and most massive object in the solar system. Sun is about 93 million miles…

Q: What evidence can you give that the corona has a very high temperature?

A: Sun is made up of different layers. Sun has layers of gas around it forming an atmosphere and the…

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Q: Give the following figure of the sun, label the features observed and describe some of the…

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Q: The surface temperature of the Sun is 5,800 K.   What wavelength of light is most intense?…

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Q: During a solar cycle, how long does it take (on average) for the Sun's magnetic field polarity to…

A: The solar's magnetic interest goes thru a repeating cycle referred to as the solar cycle, which has…

Q: Description: Imagine you are comparing the five electric hot plates (A – E) of different sizes and…

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Wien's displacement law

Students often get confused between Wien's displacement law and Planck's radiation law. Although both are historically related, yet they are conceptually different. Planck's law helps determine the spectrum of a blackbody, while Wien's law determines the relationship between peak wavelength and temperature.