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Since it keeps adding power, the escape velocity isn’t relevant for it. For the earth the escape velocity is 12km/s or 26,843mph, for something bigger like the sun the escape velocity is 618km/s or 1,382,430mph. A black hole is created when gravitational force exceeds nuclear forces, hence the original body implodes to an infinitesimal point whatever the mass was originally. Once matter crosses this threshold, the speed required for it to escape the black hole's gravitational grip is greater than the speed of light. The simplest definition of a black hole is an object that is so dense and tightly packed with matter that not even light can escape its surface. That would still quite simply imply infinite energy, so it seems consistent.I don't buy your derivation. Detailed answers to any questions you might have The simplest definition of a black hole is an object that is so dense that not even light can escape its surface. Another form that stars can transform at the end of their lives is a black hole. The formula I wrote assumes you measure the distance from a point at infinity, which is not the same since speed is coordinate dependent.Where the "surface" is the event horizon. Featured on Meta Learn black+hole with free interactive flashcards.
The diameter of the "black hole" would be where the escape velocity exceeds C, which would be mass dependent. Earth’s escape velocity is about seven miles per second, or about 25,000 miles an hour. how far from the black hole does the escape velocity become equal to the speed of light. More likely you mean within the event horizon which is the boundary at which nothing can escape from including light. If the Sun were replaced by a 1-solar-mass black hole, then Earth would. “A black hole just sits there, passively. Black holes are the only objects in the universe that can also trap light. But how does that happen? FOREWORD: Cosmologists always claim that their black holes, mathematical fabrications entire, have an escape velocity. Start here for a quick overview of the site You know it is 4 or 5 solar masses, but you want to measure it more precisely. greater than the speed of light. What is the likely final fate of a star of 30 solar masses when it is on the main sequence? The escape velocity for material inside a black hole is. greater than the speed of light.
If the Schwarzschild radius is just the radius where escape velocity equals the speed of light, what prevents anything outbound from temporarily crossing the event horizon at a speed less than c? One possibility is that they’re the result of mergers between star-size black holes.No one knows exactly what lies within a black hole’s event horizon. 1.The gravitational influence on the motion of objects in their vicinity. If you mean from the center of a black hole at which the radius is 0 then the escape velocity is infinite by basic math. Discuss the workings and policies of this site Physics Stack Exchange works best with JavaScript enabled 3.Detection of gravitational waves from mergers of black holes in binary systems. d. irrelevant since nothing (including light) can escape from a black hole. applying the modified version of Kepler's 3rd law, if the black hole is in a binary systemthe temperatures of black holes is estimated to be ________millisecond pulsars rotate about __________ times per secondin comparison to main sequence stars, which of the neutron star properties listed is not considered extreme?black holes emit radiation in the form of _________ waves known as Hawking radiationthe first pulsars were observed using ________ telescopesthe fast rotation of neutron stars is a consequence of _________compared to the sun, white dwarfs have higher _______ and lower _______white dwarfs have a surface composed of a thin layer of _______astronomers use _______ to determine the magnetic field of white dwarfs(T or F) if the sun were instantly replaced by a black hole of the same mass as our sun, the earth would be sucked into the black hole(T or F) the surface temperature of a white dwarf is higher than the surface temperature of the sun(T or F) the more mass a white dwarf has the larger it is(T or F) a chunk of material from the interior of a white dwarf would weigh about 100 times more than an Earth rock of the same size(T or F) white dwarfs have magnetic fields as much as 100 million times larger than the Earth's magnetic field(T or F) the interior of a white dwarf behaves like a degenerate gas, i.e., the temperature has little effect on the pressure(T or F) typically, if the mass of a white dwarf increases, the white dwarf shrinks and then explodes if the mass exceeds 1.4 solar masses(T or F) the fast rotation of neutron stars is a consequence of the law of conservation of angular momentum(T or F) neutron stars must have mass smaller than the Chandrasekhar limit(T or F) the spectral lines of white dwarf stars are redshifted, because their high gravity reduces the energy carried by light escaping from the white dwarf(T or F) nova explosions involve a binary system of a white dwarf and a companion star and can occur in the same system repeatedly(T or F) a type Ia supernova results in the formation of a neutron star(T or F) the strong gravitational field of white dwarf slows down the speed of escaping light, and results in the gravitational redshift(T or F) a black hole is an object with escape velocity about half the speed of light(T or F) a gravitational wave can carry energy away from two very dense objects if they are orbiting each other or collide
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