How long will a 7 solar mass balck hole live?
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Q: e la supernova?
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A: The Lifetime of a Star:- The lifetime of a star is defined by the equation: τs=τo×MMo-2.5…
Q: 27) Calculate the time it would take for 5 solar mass black to radiate its energy.
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Q: Calculate the time required for a 1 solar mass blackhoe to completely radiate its energy.
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Q: radio lines of neutral Hydrogen (apart from H91α) What does H91α meaning for?
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Q: what is a star? define neclear fusion? how does nuclear fusion keep the star keep burning ?
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- if a star is converted every bit of its mass. into energy the conversion efficiency would be 100%. however no star is this efficient in its energy production stars with less than 1.3 solar masses convert hydrogen into helium with an efficiency of only 0.7%. besring in mind that aldebaram has a mass of 2.32*10^30 kg. how long will it live if it converts all of its hydrogen into helium with an efficiency of 0.7%. 1 year = 365.25 days. lifetime= yearsIf Bν ~ 10-5 Jy Ω-1, what is the brightness temperature (TB) at 1 GHz?Calculate the time required for a 2 solar mass blackhoe to completely radiate its energy.
- 1: Briefly explain what are neutron stars and then estimate the escape velocity of a neutron star.If you were located 100 km from a 1 GW nuclear power plant,what would the neutrino flux be at your location? Assume that a1 GW nuclear power plant releases 1021 neutrinos per second andyou present a 1 m2 surface to the neutrino flux.Explain why mass exchange can proceed very rapidly if the mass-losing star is the more massive of the pair.
- What is the escape velocity (in km/s) from the surface of a 1.1 M neutron star? From a 3.0 M neutron star?Molecular cloud can release degeneracy pressure in form of radio and infrared photons True or FalseCalculate the approximate lifetime of a 60 solar mass O star (1 million solar luminosities, 50% of mass is hydrogen available for burning).