Suppose the distribution of light from a star is observed to have maximum intensity at wavelength = 700 nm. P Calculate K = 4 TR² where P is the total luminosity of the star and R is the radius. " Hint: The star is a blackbody radiator; what is its temperature? (in W/m^2) OA: 6.820x106 OB: 8.525x106 OC: 1.066x107 OD: 1.332x107 OE: 1.665x107 OF: OG: 2.081x107 2.602x107 OH: 3.252x107

Q: Many of the bright stars in the night sky are highly luminous normal blue stars (such as Acrux), and…

A:

Q: A star has a surface temperature of T = 10,000 K and a radius three times that of the Sun, R = 3R…

A:

Q: 656 nm emitted by electrons dropping from the n = 3 to the n = 2 orbital in hydrogen. The hydrogen…

A:

Q: Which spectral line does this likely correspond to?

A: we can use the doppler shift formula to find laboratory wavelength.

Q: What is the rate of thermal radiation emitted from a star with a radius of 4.11 x 109 m and a…

A: A blackbody is considered as an ideal physical body which will absorb and emit all the radiations…

Q: Suppose the distribution of light from a star is observed to have maximum intensity at wavelength =…

A:

Q: Star B has a temperature that is 5 times higher than Star A. How much more energy per second…

A:

Q: Consider two stars, A and B, of equal size. You take a spectrum of each star and find that the flux…

A:

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: What is the ratio of the angular resolution limit of Keck to the angular resolution limit of HST?…

A: Angular resolution is a parameter which defines how closely can an object such as a viewing…

Q: This star has a mass of 3.3 MSun.  what is the main sequence lifetime of this star? You may assume…

A: Given data: Mass of the star MStar=3.3 MSun. The life time of the main sequence star is given as,…

Q: . The spectrum of Star A peaks at 700 nm. The spectrum of Star B peaks at 470 nm. We know nothing…

A:

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: What is the escape velocity (in km/s) from the surface of a 1.6 M, neutron star? From a 3.0 Mo…

A: The mass of the Sun, M⊙=1.99×1030 kg   The radius of the neutron star, r=11 km

Q: like a black body with temperature 5800 K.  Use the Stefan-Boltzmann Law to calculate the Sun's…

A: Given: Sun's Radius (R) = 6.96 x 1010 cm  Stefan-Boltzmann Constant  (σ)=5.67 x 10-5 ergs/cm2 K4 s…

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: A star has a surface area of 6.92x1018 m2. How much power does it radiate if it has a surface…

A: (given)   Surface area (A) of star = 6.92 x 1018 m2 Surface temperature (T) = 6,017 K σ is the…

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: spectrum of this star, the H alpha line is observed to have a wavelength of 656.034 nm when measured…

A:

Q: Part D By how much? ΑΣΦ LM=-2 100000000 %3D LM=8 Submit Previous Answers Request Answer

A:

Q: A cloud of gas has a temperature of 5,000 K. Estimate the width of the hydrogen H-alpha line with…

A:

Q: The sun has a luminosity of 3.9 × 1026 W and an angular diameter of θ = 32 arc mins. Assume that the…

A:

Q: What is the rate of thermal radiation emitted from a star with a radius of 2.310x 109mand a surface…

A: A blackbody is considered as an ideal physical body which will absorb and emit all the radiations…

Q: 17.2 (a) Use the fact that f [2³/(e² - 1)] dz = π/15 to show that the total radiant energy emitted…

A: The total radiant energy emitted per unit area by a blackbody is given by the Stefan-Boltzmann law:…

Q: A star has a surface area of 6.92*1018 m2 . How much power does it radiate if it has a surface…

A:

Q: We will take a moment to compare how brightly a white dwarf star shines compared to a red giant…

A: The luminosity () of a star is related to its surface temperature () and radius () through the…

Q: If a star gives off light at a peak wavelength of 6.80x10-7 m. What would be the temperature of this…

A: Given peak wavelength = 6.8×10-7m

Q: Choose the statements that correctly describe the characteristics of the stars located in the…

A: Option-E is the correct option.

Q: Astronomers use two basis properties of stars to classify them. These two properties are luminosity…

A: Introduction: The Hertzsprung–Russell diagram is a scatter plot of stars showing the relationship…

Q: Q3.2 The supergiant star has a surface temperature of about 2900 K and emits a power of…

A: Temperature Power For perfect emitter, emissivity Radius