object (A and B), state if it is a star
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: An astronomer is observing a binary star that is 15 pc away. The two stars have an orbital…
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Q: If a star has a surface temperature 2 times lower than the Sun's and a luminosity the same as the…
A: Given, If To is the surface temperature of the sun, Lo is the luminosity of the sun Then for the…
Q: If a star has a radius 2 times larger than the Sun's and a luminosity 1/4th that of the Sun, how…
A: Given that Radius of star, R = 2 luminosity of the star ,
Q: The Stelan Bomann equation can be used to estimate the size of asteroids. "Sigma," the…
A: In case of a Black body radiation, Stefan-Boltzmann's law relates the radiant emittance of the black…
Q: Which spectral line does this likely correspond to?
A: we can use the doppler shift formula to find laboratory wavelength.
Q: The blackbody emission spectrum of object A peaks in the ultraviolet region of the electromagnetic…
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Q: Star A has a temperature of 3000K; Star B has a temperature of 5000K; Star C has a temperature of…
A: Given value--- temperature of star A = 3000 K. temperature of star B = 5000 K. Temperature of…
Q: Star A has an effective temperature of TA = 7200 K and a radius of RA = 2.04R , asecond star, Star…
A: Let LA be defined as the luminosity of star A and LB be defined as the luminosity of star B. The…
Q: Consider two stars, A and B, of equal size. You take a spectrum of each star and find that the flux…
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Q: Find the speed for a star in which this line appears at wavelength 122.5 nmnm.
A: Given wavelength = 122.5 nm Hydrogen transition wavelength = 121.6 nm Speed of light is c = 3×108…
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 =…
Q: A powerful telescope can observe an object down to about the 30th magnitude in the B-band. To what…
A: Given:- A powerful telescope can observe an object down to about the 30th magnitude in the B-band.…
Q: Le Trifid Nebula.
A: SOL.The reason is the difference in wavelengths captured by each type of imaging.Explanation:The two…
Q: Our Sun is considered an "average" star. What is the average star really like? Explain. Could you go…
A: We can define an average star as: An average star, or more properly, an intermediate-mass star,…
Q: Suppose a star has a luminosity of 7.0x1026 watts and an apparent brightness of 4.0×10-12 watt/m?.…
A: Luminosity of star (L) = 7×1026 watt Apparent brightness (AB) = 4×10-12 Wm2
Q: If the surface Temperature of a star was about 11000.0 K instead of 7000.0 K what is the ratio of…
A: Given , temperature of the star is 11000 K instead of 7000 K How many times greater is the magnitude…
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: Star A’s luminosity is four times greater than Star B’s. Both stars have the same surface…
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Q: Star A has an apparent magnitude of –1.5 and is 12.6 light-years from Earth. Star B has an apparent…
A: Given: dA=12.6ly=3.863parsec, dB=15.6ly=4.783parsec, mvA=-1.5, mvB=0.4 The apparent magnitude of a…
Q: What measurements would you make (assuming you have the money, time, & equipment) to determine a…
A: In this question we have to answer what measurements we will make to determine the surface…
Q: A star whose temperature is 8000 K has a peak wavelength of 362.5 nm, according to Wien's Law. If…
A: temperature of the star = 8000 K peak wavelength (λo) = 362.5 nm velocity of star (v) = 402000 kmhr…
Q: ou observe a star with a telescope over the course of a year. You find that this star has a flux…
A: .In vertical direction:psinθ=40sin60Psinθ=4032Psinθ=34.6410 free body diagram:
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: Imagine that you are observing a star and you find the wavelength of peak emission for the star to…
A: required:)wavelength of peak emission for a new star having temperature one third of original star.
Q: Consider two stars A and B, with apparent magnitudes mA = 3 and mB = 13. How much brighter (in…
A: Given, mA = 3 and mB = 13 Now, the difference in apparent magnitude is n = mB -…
Q: If star A is five light years away and star B is 10 light years away how much brighter is A than…
A: Given Data Distance of the star A is rA=5 light year Distance of the star B is rB=10 light year We…
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: Many of the bright stars in the night sky are highly luminous normal blue stars (such as Acrux), and…
A: Given: The distance between the bright star and the earth is r = 620 light years The luminosity of…
Q: As we read in the book, a star that appears to be 1 magnitude brighter will have approximately 2.5…
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Q: Two identical stars are moving in a circular orbit around one another with an orbital separation of…
A: The Hubble Space Telescope or HST is a space telescope placed in the low Earth orbit. It has a 2.4 m…
Q: Box 17-4 Suppose a star experiences an outburst in which its surface temperature doubles but its…
A: Firstly, let's use the formula for the volume of a sphere to determine the change in the star's…
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: Stellar Classification and H-R Diagram Placement (40 points available). a. Where is your star…
A: ..
Q: A bright red star is moving towards Earth. Which of the choices best completes the following…
A: Answer : - option D is correct. Explanation It is absorption because it is continuous spectrum,…
Q: You record the spectrum of a distant star using a telescope on the ground on Earth. Upon analysing…
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Q: Using a 8-m reflector telescope on Mars, what is the maximum distance we could measure using stellar…
A: we need to tell us what is the maximum distance we could measure using stellar parallax.
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: 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: Two identical stars are moving in a circular orbit around one another, with an orbital separation of…
A: An orbital separation of two identical stars, s=2 AU=2 AU×1.5×1011 m1 AU=3×1011 m The distance of…
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: If a star has a surface temperature of 3000 K but a luminosity 150 times greater than our Sun, what…
A: luminosity = 150 times greater than Sun, temperature = 3000 K what size is this star?
Q: Using Wien's Law for two black body objects with a temperature of 1000 K (fire) and 290 K…
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The picture shows the spectra of two objects observed with a new telescope
- For each object (A and B), state if it is a star and why or why not?
- If Object A cooled (while staying the same size), what would happen to the brightness and colour of the star.
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