The brightest star in the sky is Sirius, the Dog Star. It is actually a binary system of two stars, the smaller one (Sirius B) being a white dwarf. Spectral analysis of Sirius B indicates that its surface temperature is 24,000 K and that it radiates energy at a total rate of 1.0 * 1025 W. Assume that it behaves like an ideal blackbody. (a) What is the total radiated intensity of Sirius B? (b) What is the peak-intensity wavelength? Is this wavelength visible to humans? (c) What is the radius of Sirius B? Express your answer in kilometers and as a fraction of our sun’s radius. (d) Which star radiates more total energy per second, the hot Sirius B or the (relatively) cool sun with a surface temperature of 5800 K? To find out, calculate the ratio of the total power radiated by our sun to the power radiated by Sirius B..

The brightest star in the sky is Sirius, the Dog Star. It is actually a binary system of two stars, the smaller one (Sirius B) being a white dwarf. Spectral analysis of Sirius B indicates that its surface temperature is 24,000 K and that it radiates energy at a total rate of 1.0 * 1025 W. Assume that it behaves like an ideal blackbody. (a) What is the total radiated intensity of Sirius B? (b) What is the peak-intensity wavelength? Is this wavelength visible to humans? (c) What is the radius of Sirius B? Express your answer in kilometers and as a fraction of our sun’s radius. (d) Which star radiates more total energy per second, the hot Sirius B or the (relatively) cool sun with a surface temperature of 5800 K? To find out, calculate the ratio of the total power radiated by our sun to the power radiated by Sirius B..

Related questions

Q: (b) What is the surface temperature of the star? 4274.3 X K (c) At what rate is energy emitted from…

A: b) The star’s surface temperature can be determined by Wein’s displacement law as, Here, T, b, and…

Q: The temperature of the surface of Pluto is about T(K) = 40 K (TC = -230 °C). %3! According to Wien's…

A: Frequency f is related to wavelength λ is given by f=C/λ, where C= speed of light

Q: The two nuclei in the carbon monoxide (CO) molecules are 0.1128 nm apart. The mass of the carbon…

Q: Your research team analysis the light of a mysterious object in space. By using a spectrometer,you…

A: solution of part (a)here is the spectral lines in red circular shape first four spectral lines of…

Q: 8. At the center of the Sun, the mass density is p = 1.52 × 105kgm-3 an the mean opacity is K =…

A: Its a very simple question. The important thing here is to know the formula by which we can…

Q: The surface temperature of Sun is about 6000 K. If we consider the Sun as a black body, what is the…

Q: Will the photocell function (electrons be released) with this wavelength of light?

Q: A photoelectron is emitted from K shell (n = 1) of a carbon atom, and an election in L shell (n = 2)…

A: Using Moseley Law to calculate the wavelength of the photon in this process,

Q: In the photon energy range 2 to 10 keV, X rays coming from the Crab Nebula have an intensity of…

Q: exact value of s for significant figure purposes, 24 x 103 eV n . nm (three $). If the electron in a…

Q: The radius of our sun is r = 6.96 × 108 m and its total power is 3.85 × 1026 W. The area of a sphere…

A: Given that the radius of the sun and area of the sphere and total power is also given. Then We have…

Q: The star Betelgeuse has surface temperature 3590 K and can be regarded as a blackbody. (a) Find the…

A: The temperature of the Betelguese is given as T=3590 K (a). According to Weins displacement law, the…

Q: Giana is looking up at a particular star in the night sky, and 2000 photons per second are entering…

A: Given information: The photons/second entering the pupil (n) = 2000 The diameter of the pupil (d) =…

Q: A blackbody is radiating at a temperature of 2.10 x 103 K. (a) What is the total energy density of…

Q: The central density of the Sun is calculated to be p=1.53x10$ kg/m³ and the averaged opacity at the…

A: Given, The central density of the sun is, ρ=1.53×105kg/m3 And average opacity at the center is,…

Q: A Blackbody radiator emits blue light with a wavelength of 475 nanometres (nm). a) Describe what a…

A: a) A black-body is an idealized physical body that absorbs all incident electromagnetic radiation…

Q: A hydrogen atom in an n=2 state absorbs a photon. Part a: What wavelength photons might be emitted…

Q: The Sun has a temperature of approximately 5800 K. a) What is the peak wavelength of light emitted…

A: We are authorized to answer three subparts at a time, since you have not mentioned which part you…

Q: Hydrogen H2 is a diatomic molecule composed of two hydrogen atoms. (Figure 1) is an energy diagram…

A: Given that: The velocity is v=19 km/s= 19×103 m/s The distance is x=0.05 nm The energy is…

Q: The two spherical bodies A (radius 6 cm) and B (radius 18 cm) are at temperatures T1 and T2,…

Q: The spectrum of light from a star is, to a good approximation, a blackbody spectrum. The red…

Q: if a detector receives 10-10 Watts of power in the wavelength band 2.65 to 2.80 \mu m, how many…

Q: Suppose an infrared photon has a frequency of 2.2 × 1013 Hz. Part (a) Calculate the energy, in…

Q: (A) The electron in a hydrogen atom makes a transition from a higher energy level to the ground…

A: Energy difference for a downward transition

Q: The first five energy levels of the hydrogen atom are at −13.6 eV, −3.4 eV, −1.51 eV, −0.85 eV, and…

A: Transitions of electrons between different energy levels releases energy in the form of photons. The…

Q: A particular star has a radius of 8.46 ✕ 108 m. The peak intensity of the radiation it emits is at a…

A: (Since it is a multipart question, the first three questions are done). Photon energy is the energy…

Q: A blackbody radiator (none of the choices) does not absorb thermal radiation. emits radiation only…

A: First option is correct.

Q: Here you are invited to explore the process of human vision. (a) The flux of visible photons…

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

Q: Suppose a star with radius 8.51 108 m has a peak wavelength of 689 nm in the spectrum of its…

Q: The light from the sun is found to have a maximum intensity near the wavelength of 470 nm. Assuming…

A: To find-Temperature of sun (T)=?Given-Wavelength (λ)=470 nm=470×10-9 mWien's constant (b)=2.898×10-3…

Q: In a hydrogen atom, an electron is electrically bound to a proton. The binding energy is the energy…

Q: e E1 = 0.00 eV, E2 = 1.34 eV, and E3 = 3.95 eV. %3D %3D

A: "As per our company policy we can answer only one question at a time. Kindly repost the remaining…

Q: (b) The Sun has a temperature of 5770 K, and radiates a thermal spectrum. How many nanometers (nm)…

A: Since we only answer 1 question in case of multiple question, we’ll answer the exact one which has…

Q: Calculate the wavelength of a photon having an energy of 5.89 x 10^11 J of energy. E = hc/λ

A: SOlution: given that E =5.89 x 10^11 J to calculate the wavelenght of the photon

Q: Vega is the fifth brightest star in the night sky. This bluish dwarf star has a radius of 0.810 x…

Question

The brightest star in the sky is Sirius, the Dog Star. It is actually a binary system of two stars, the smaller one (Sirius B) being a white dwarf. Spectral analysis of Sirius B indicates that its surface temperature is 24,000 K and that it radiates energy at a total rate of 1.0 * 10²⁵ W. Assume that it behaves like an ideal blackbody. (a) What is the total radiated intensity of Sirius B? (b) What is the peak-intensity wavelength? Is this wavelength visible to humans? (c) What is the radius of Sirius B? Express your answer in kilometers and as a fraction of our sun’s radius. (d) Which star radiates more total energy per second, the hot Sirius B or the (relatively) cool sun with a surface temperature of 5800 K? To find out, calculate the ratio of the total power radiated by our sun to the power radiated by Sirius B.
.

Expert Solution