the phenomena of black hole and event horizon is hard to explain because ?
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the phenomena of black hole and event horizon is hard to explain because ?
A spaceship that is outside the event horizon of a black hole will: fall into the black hole escape the pull of the black hole orbit in an ellipse around the black hole orbit in a complicated spirograph pattern not enough information
The Schwarzschild radius, or event horizon, of a black hole is the distance from a black hole at which the escape velocity is the speed of light. Calculate the Schwarzschild radius of a black hole with the mass of Mount Rushmore (reminder: Mt. Rushmore has a mass of about 3 x 1013 grams).
Nothing can escape the event horizon of a black hole, not even light. You can think of the event horizon as being the distance from a black hole at which the escape speed is the speed of light, 3.00 × 108 m/s, making all escape impossible. Part A What is the radius of the event horizon for a black hole with a mass 6.0 times the mass of the sun? This distance is called the Schwarzschild radius.
A black hole has an event horizon radius of 4.00×103 m . A) What is its mass? B) Determine the gravitational acceleration it produces at a distance of 4.01×103 m from its center. C) Determine the escape speed at a distance of 4.01×103 m from its center.
Black holes have a special boundary called the event horizon, beyond which not even something traveling at the speed of light can escape. Use what you know about escape velocity to find the event horizon distance for a 5 solar mass (1 Msolar = 2x1030 kg) black hole. Your answer will be in meters.
Problem 3: Schwarzschild Black Holes (a) Calculate the proper-time to fall from the event horizon to the center of a black hole along a geodesic with no angular momentuln (1 0). (b) Calculate the proper-time to fall from some fixed distance 2GM < ro < oo to the event horizon, r-2GM, along a geodesic with no angular momentum (e-0).
4. In April 2019, the Event Horizon Telescope obtained the first image of a supermassive black hole. What is the diameter of the telescope if its resolution is 2.5 x 10-8 degrees and the frequency of operation is 230 GHz? (2 points).
How would you simply describe a black hole to someone in your family who has not taken astronomy? What do we mean by the event horizon of a black hole, and how did Karl Schwarzschild estimate the radius of a black hole? How could we theoretically decrease the event horizon (or Schwarzschild radius) of a black hole? What about a black hole makes this essentially impossible?
1. A black hole with a larger mass will have a __________ thermal luminosity. 2. From the point of view of an outside observer, clocks appear ______________ in color as they approach the event horizon of a black hole.
Astronomers now think that there is a black hole with more than 4 million times the mass of our Sun at the center of our Galaxy? Roughly how large would the event horizon of such a supermassive black hole be? A. the size of our Moon B. about 4 light years across C. about 17 times the size of the Sun D. about the size of an atom (so much mass really compresses the event horizon) E. we can’t answer...