Astronomers now think that there is a black hole with more than 4 million times the...
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 this question without knowing exactly what kind of stars were swallowed by the black hole
Homework Answers
The supermassive black hole at the center of our galaxy is called Sagittarius A* has an event horizon of about 7.9 million miles. Comparing that to the diameter of the sun (1.3 million miles), we can say that the black hole is approximately 7 times the size of the Sun. However, here the closest option is C, about 17 times the size of the Sun.
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Astronomers now think that there is a black hole with more than
4 million times the...
3. In this problem, we are going to examine the supermassive black hole in the center...
3. In this problem, we are going to examine the supermassive black hole in the center of our galaxy, Sagittarius A.. (a) (15 points) We can calculate its mass using the orbits of stars gravitationally bound to it in the same way that you can use the Earth's orbit to calculate the mass of the Sun). The orbit of a star, S2, has been fully mapped out. Its period is 15.24 yr and semi-major axis length is 980 AU. Using...
Astronomers have observed a small, massive object at the center of our Milky Way galaxy. A...
Astronomers have observed a small, massive object at the center of our Milky Way galaxy. A ring of material orbits this massive object; the ring has a diameter of about 10 light years and an orbital speed of about 210 km/s . A) Determine the mass of the massive object at the center of the Milky Way galaxy. Give your answer in kilograms. B) Give your answer in solar masses (one solar mass is the mass of the sun). C)...
Nothing can escape the event horizon of a black hole, not even light. You can think...
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.
3. I'm Supermassive! a) Caleulate the Schwarzschild radius of a 109 solar mass black hole. How...
3. I'm Supermassive! a) Caleulate the Schwarzschild radius of a 109 solar mass black hole. How does your answer compare with the size of our solar system (given by the diameter of Pluto's orbit)? (b) You observe the Doppler shifts of emission lines from gas orbiting at a distance of 60 light- years from the central supermassive black hole in the galaxy M87 (see Figure 21.18b in your textbook). Suppose you now observe emission lines from gas at (i) 30...
The Schwarzschild radius RBH for an object of mass M is defined as RBH = 2GM...
The Schwarzschild radius RBH for an object of mass M is defined as RBH = 2GM where c is the speed of light and G is the universal gravitational constant. RBH gives the radius of the event horizon of a black hole with mass M. In other words, it gives the radius to which some amount of mass M would need to be compressed in order to form a black hole. The mass of the Sun is about 1.99 x...
The Schwarzschild radius RBH for an object of mass M is defined as 2GM RBH =...
The Schwarzschild radius RBH for an object of mass M is defined as 2GM RBH = - where c is the speed of light and G is the universal gravitational constant. RBH gives the radius of the event horizon of a black hole with mass M. In other words, it gives the radius to which some amount of mass M would need to be compressed in order to form a black hole. The mass of the Sun is about 1.99...
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While reading the story, consider the culture (or sub culture) and related communication styles the story...
While reading the story, consider the culture (or sub culture)
and related communication styles the story reveals.
Consider too, possibly, the values, behavioral norms, social
practices, social artifacts, etc.
After reading the story through the lens of this idea, please
compose a full academic length (evidence-based 7 to 11 sentence
long) paragraph which addresses the following prompt:
What does the story reveal about the culture it portrays
and/OR the communication styles the culture shares?
In other words, what does the...
3. In this problem, we are going to examine the supermassive black hole in the center of our galaxy, Sagittarius A.. (a) (15 points) We can calculate its mass using the orbits of stars gravitationally bound to it in the same way that you can use the Earth's orbit to calculate the mass of the Sun). The orbit of a star, S2, has been fully mapped out. Its period is 15.24 yr and semi-major axis length is 980 AU. Using...
3. I'm Supermassive! a) Caleulate the Schwarzschild radius of a 109 solar mass black hole. How does your answer compare with the size of our solar system (given by the diameter of Pluto's orbit)? (b) You observe the Doppler shifts of emission lines from gas orbiting at a distance of 60 light- years from the central supermassive black hole in the galaxy M87 (see Figure 21.18b in your textbook). Suppose you now observe emission lines from gas at (i) 30...
The Schwarzschild radius RBH for an object of mass M is defined as RBH = 2GM where c is the speed of light and G is the universal gravitational constant. RBH gives the radius of the event horizon of a black hole with mass M. In other words, it gives the radius to which some amount of mass M would need to be compressed in order to form a black hole. The mass of the Sun is about 1.99 x...
The Schwarzschild radius RBH for an object of mass M is defined as 2GM RBH = - where c is the speed of light and G is the universal gravitational constant. RBH gives the radius of the event horizon of a black hole with mass M. In other words, it gives the radius to which some amount of mass M would need to be compressed in order to form a black hole. The mass of the Sun is about 1.99...
Now we consider a black hole of the same mass as the Sun: Mbh 2x 1030 kg. (a) (2 marks) Show that if you are launching a rocket with velocity v upwards from a pl M, you can only escape the planet's gravity if you start from a radius r > 2GM/ t of mass Hint: Use Newtonian mechanics. What if your rocket is acutally a beam of light? If we forget about relativity for a minute, we can put...
Now we consider a black hole of the same mass as the Sun: Mbh 2 x 1050 k (a) (2 marks) Show that if you are launching a rocket with velocity v upwards from a planet of mass M, you can only escape the planet's gravity if you start from a radius r > 2GM/v2 Hint: Use Newtonian mechanics What if your rocket is acutally a beam of light? If we forget about relativity for a minute, we can put...
While reading the story, consider the culture (or sub culture)
and related communication styles the story reveals.
Consider too, possibly, the values, behavioral norms, social
practices, social artifacts, etc.
After reading the story through the lens of this idea, please
compose a full academic length (evidence-based 7 to 11 sentence
long) paragraph which addresses the following prompt:
What does the story reveal about the culture it portrays
and/OR the communication styles the culture shares?
In other words, what does the...
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