For a 1 solar mass white dwarf with a radius of 6000km, calculate the momentum and kinetic energy (in units of electronvolts) of an electron in the highest occupied electron state. Assume the star consists only of carbon and has a uniform density. Calculate the momentum and kinetic energy of a neutron in the highest occupied neutron state for a 2 solar mass neutron star with a radius of 1Okm. Assume that the star has a uniform density and consists only of neutrons.

Q: Taking the distance to the Crab pulsar to be 2000 pc and the bolometric magnitude at maximum…

A: The Crab Pulsar is described as a young neutron star. The star is the central star in the Crab…

Q: What is the average density of a neutron star that has the same mass as the sun but a radius of only…

A: Given, Radius of neutron star R= 93.106 km

Q: A red giant star might have radius = 104 times the solar radius, and luminosity = 1730 times solar…

A: This problem can be solved using Stefan-Boltzmann law of Black body radiation.

Q: If the radius of the neutron star is 85.074 km, what is the average density of a neutron star that…

A: mass of the sun, Msun=1.989×1030 kg Radius of the sun, R=85.074 km Volume, V=43πR3

Q: What is the average density of the neutron star that has the same mass as the sun but a radius of…

A:

Q: 7. If a car was on the highway and was trying to pass another ar and went from a speed of 60 m/s to…

A: Given : vo = 60 m/s v = 75 m/s t = 3 seconds

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A:

Q: A supernova occurs 140,000 light years from Earth, where a neutron star of mass 1.6 solar masses and…

A:

Q: What is the escape velocity at the surface of a typical neutron star?

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Q: Q7// a- Estimate the density of a white dwarf if it has a solar mass packed into a sphere with…

A: Hello. Since you have posted multiple questions and not specified which question needs to be solved,…

Q: In a white dwarf, each electron can be considered to be located in a region of size 1.5x10-12 m.…

A: White Dwarf: A small very dense star. A white dwarf is formed when low mass star has exhausted all…

Q: Determine the surface gravity on a neutron star. Assume the star has a mass 50% bigger than the…

A: mass of Sun = 1.98 * 1030 Kg mass of neutron star = mass of sun + 50%mass of sun  = 1.5 * 1.98 *…

Q: If the expanding layers of a supernova move at a constant velocity of v = 10, 000 %3D km/s and the…

A: Given: velocity of supernova v=104 km/s mass of the supernova M=2.4×1031 kg Ephoton=mc2 Time taken…

Q: V603 Aquilae was a nova outburst that occurred on June 8, 1918, at which time it attained a peak…

A: Given information: The apparent magnitude of the (m) = -0.5 The apparent angular diameter of shell…

Q: In a fully degenerate gas, all the particles have energies lower than the Fermi energy.  Using the…

A:

Q: An AGN hosts a central Black Hole of mass 2×1038×1038 kg. The AGN emits at 1/51/5 of the Eddington…

A: To find the luminosity of the AGN, we can use the Eddington luminosity formula:L = η * (4 * π * G *…

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A: Given information: The mass of the star (M) = 1 M⊙ The luminosity of the star (L) = 100 L⊙ The…

Q: Convert the average mass density in gm/cm-3 of a M = 0.5 Msun  R = 0.015 Rsun white dwarf to the…

A: Given that For white dwarf star given that M = 0.5 Msun  R = 0.015 Rsun We know that mass of sun…

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A: Given: The supernova explosion created the shock wave, and the current location is at the edge of…

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A: Luminosity of the star is defined as the power emitted by the star. Power is simply the energy…

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Q: A Type la supernova is observed and achieves an apparent magnitude of m 19.89 at peak brightness.…

A: Given Apparent magnitude, m=19.89 Absolute magnitude, M=-19 We know, m-M=5log(d10) where d is the…

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A: Given information": The absolute visible magnitude of Vega (Mv) = 0.5 The Spectral class of Vega is…

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A: Kepler’s third law for binary stars

Q: a 120 Mo star forms with log10 Te = 4.727 and logio (L/Lo) = 6.252, estimate its Eddington…

A: Given: log10Teff/k=4.727 log10L/L⊙=6.252 To Find: Eddington luminosity

Q: If the radius of the neutron star is 85.074 km, what is the average density of a neutron star that…

A: The density of a neutron star is given by, ρ=MV where M is the mass of the star and V is the volume…

Q: We learned in class that, when stars collapse under their own gravity, they conserve angular…

A:

Q: The exponential drop in the brightness of supernova 1987A was due to the decay of 56Ni (t1/2 = 6.1…

A: Given: The reaction of decay is given as, Ni56t1/2=6.1 days→Co56t1/2=77.1 days→Fe56

Q: 3000 cm source with luminosity at 13.6 eV of L13.GeV = 2.18 x 109 erg s- at the centre. cloud of…

A: We can estimate the size of the HII region by calculating the stromgren radius Now nH is the cloud…

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

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Q: If the radius of the neutron star is 85.074 km, what is the average density of a neutron star that…

A: To Find :  density of neutron star

Q: The rest wavelength of the Hα transition of atomic hydrogen is 656.3 nm (recall that 1 nm=10-9 m).…

A:

Q: What is the surface gravity on the surface of White Dwarf of 1 Solar Mass? What about a Neutron Star…

A: Mass of white dwarf = m =1 solar massRadius of White Dwarf = rWDRadius of Neutron star = rNSRadius…

Q: What is the Schwarzschild radius of a star with a mass of z × 109 MSun? The answer is in 106m. So if…

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Q: If Betelgeuse is a M2 type star, what is the approximate temperature of the star in K?

A: Introduction - It is a supergiant star and the distance of this star from the sun is approximately…

Q: If a 1.40 MSun neutron star has a radius of 10.0 km, what is the radius (in km) of a 2.15 MSun…

A: A 1.40 MSun neutron star has a radius of 10.0 km, what is the radius (in km) of a 2.15 MSun neutron…

Q: Vega Star of radius (1.6832) million km emit a) thermal radiation as a black body radiation at…

A:

Q: What is the average density of a neutron star that has the same mass as the sun but a radius of only…

A: r=Radius of star=86.234 kmm=Mass of star=Mass of Sun=1.989×1030 kgV=Volume of star=43πr3

Q: During the collapse of a supernova explosion, calculate the change in gravitational potential hergy…

A: During explosion of supernova, the gravitational potential energy of the core is lost, hence the…

Q: If a circular accretion disk around a 1.4 M. neutron star has a radius of 8.00 x 10° km as measured…

A: Given data: Mass of the Neutron star is, M= 1.4 Ms Where,  Ms - Mass of the sun Therefore, Mass of…

Q: A Type Ia supernova is observed and achieves an apparent magnitude of m = 19.89 at peak brightness.…

A: Given Values :The absolute magnitudes of Type Ia supernovae at peak brightness,    M = -19 Apparent…