The sun orbits the center of the Milky Way galaxy (see figure) in a period of...
The sun orbits the center of the Milky Way galaxy (see figure) in a period of 2.5 108 years.
(a) Assuming a circular orbit of radius 2.12 1020 m, compute the mass of the Milky Way.
(b) Estimate the number of stars in the Milky Way, assuming the average star mass equals the mass of the sun—2.0 1030 kg. units
Homework Answers
Add Answer to:
The sun orbits the center of the Milky Way galaxy (see figure) in a period of...
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)...
It is said that at the center of every galaxy is a supermassive black hole (the...
It is said that at the center of every galaxy is a supermassive black hole (the picture below shows a picture towards the center of the Milky Way from the Keck Observatory). By observing the orbits of nearby stars, you can get a crude estimate of the mass of this black hole by assuming the stars have a circular orbit. Consider the star SO-2, which has an orbital period of 16.3 years. Its average distance from the black hole is...
A. The Sun travels in a circular orbit at a velocity of 220 km/second at a...
A. The Sun travels in a circular orbit at a velocity of 220 km/second at a distance of 8.0 kiloparsecs from the center of the Galaxy (note that these numbers are slightly different from those in your book). Calculate the number of years it takes the Sun to complete an orbit (i.e., the circumference of a circle with an 8.0 kiloparsec radius) around the center of the Galaxy. (There are 3.1 x 1013 kilometers/parsec and 3.2 x 107 seconds/year.) B....
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...
Astronomical observations of our Milky Way galaxy indicate that it center. (For your calculations, assume that...
Astronomical observations of our Milky Way galaxy indicate that it center. (For your calculations, assume that the galaxy's mass is concentrated near its center.) has a mass of about 8 × Ό11 solar masses. A star orbiting near the galaxy S periphery. S ,, e İ-lit ears or ts (a) What should the orbital period of that star be? yr If its period is 6.7 x ǐ07 years instead, what is the mass of the galaxy? Such calculations are used...
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 12 light-years. If this massive object at the center has a mass of 2.75 x 1037 kg, what is the material orbital speed? Give your answer in km/h.
A star near the visible edge of a galaxy travels in a uniform circular orbit. It...
A star near the visible edge of a galaxy travels in a uniform circular orbit. It is 42,700 ly (light-years) from the galactic center and has a speed of 275 km/s. Estimate the total mass of the galaxy based on the motion of the star. Gravitational constant is 6.674×10−11 m3/(kg·s2) and mass of the Sun Ms=1.99 × 1030 kg. The total visible mass (i.e., matter we can detect via electromagnetic radiation) of the galaxy is 1011 solar masses. What fraction...
Astronomical observations of our Milky Way galaxy indicate that it has a mass of about 8.0...
Astronomical observations of our Milky Way galaxy indicate that it has a mass of about 8.0 x 1011 solar masses. A star orbiting near the galaxy's periphery is 5.7 x 104 light-years from its center. (a) What should the orbital period (in y) of that star be? 24.2e6 ху (b) If its period is 5.1 x 107 years instead, what is the mass (in solar masses) of the galaxy? Such calculations are used to imply the existence of other matter,...
For this problem assume that the stars in the Milky Way are in circular orbits in...
For this problem assume that the stars in the Milky Way are in circular orbits in the plane of the galaxy with speedy(r), where r measures the distance from the galactic center. 1. The inner portions of the Milky Way rotate as a solid body, meaning that the angular velocity ω is constant. ωΞω0 What does this imply about how the orbital (rotational) velocity as a function of distance from the galactic cen Using Newton's laws of motion (balance centripetal...
op Plaskett's binary system consists of two stars that revolve In a circular orbit about a center of mass midway betwee...
op
Plaskett's binary system consists of two stars that revolve In a circular orbit about a center of mass midway between them. This statement implies that the masses of the two stars are equal (see figure below). Assume the orbital speed of each star is |v | = 240 km/s and the orbital period of each is 12.5 days. Find the mass M of each star. (For comparison, the mass of our Sun is 1.99 times 1030 kg Your answer...
It is said that at the center of every galaxy is a supermassive black hole (the picture below shows a picture towards the center of the Milky Way from the Keck Observatory). By observing the orbits of nearby stars, you can get a crude estimate of the mass of this black hole by assuming the stars have a circular orbit. Consider the star SO-2, which has an orbital period of 16.3 years. Its average distance from the black hole is...
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...
Astronomical observations of our Milky Way galaxy indicate that it center. (For your calculations, assume that the galaxy's mass is concentrated near its center.) has a mass of about 8 × Ό11 solar masses. A star orbiting near the galaxy S periphery. S ,, e İ-lit ears or ts (a) What should the orbital period of that star be? yr If its period is 6.7 x ǐ07 years instead, what is the mass of the galaxy? Such calculations are used...
Astronomical observations of our Milky Way galaxy indicate that it has a mass of about 8.0 x 1011 solar masses. A star orbiting near the galaxy's periphery is 5.7 x 104 light-years from its center. (a) What should the orbital period (in y) of that star be? 24.2e6 ху (b) If its period is 5.1 x 107 years instead, what is the mass (in solar masses) of the galaxy? Such calculations are used to imply the existence of other matter,...
For this problem assume that the stars in the Milky Way are in circular orbits in the plane of the galaxy with speedy(r), where r measures the distance from the galactic center. 1. The inner portions of the Milky Way rotate as a solid body, meaning that the angular velocity ω is constant. ωΞω0 What does this imply about how the orbital (rotational) velocity as a function of distance from the galactic cen Using Newton's laws of motion (balance centripetal...
op
Plaskett's binary system consists of two stars that revolve In a circular orbit about a center of mass midway between them. This statement implies that the masses of the two stars are equal (see figure below). Assume the orbital speed of each star is |v | = 240 km/s and the orbital period of each is 12.5 days. Find the mass M of each star. (For comparison, the mass of our Sun is 1.99 times 1030 kg Your answer...
Most questions answered within 3 hours.
-
An object in front of a concave mirror has a real image that is
11.5 cm...
asked 10 minutes ago -
Consider the reaction, C3 H8 + O2 --> CO2 + H2O. How many
moles of O2...
asked 1 hour ago -
You and your opponent both roll a fair die. If you both roll the
same number,...
asked 2 hours ago -
In a study of the accuracy of fast food drive-through orders,
Restaurant A had 257 accurate...
asked 2 hours ago -
Identify and describe in detail the four categories of
institutions that could be included in a...
asked 2 hours ago -
In python
class Customer:
def __init__(self, customer_id, last_name, first_name, phone_number, address):
self._customer_id = int(customer_id)
self._last_name =...
asked 2 hours ago -
What is an example of a limitation in implementing a new
ERP system and how it...
asked 2 hours ago -
In a section of 9.7cm of an artery with a radius of 2.6mm there
is a...
asked 2 hours ago -
the two carboxylic acid groups of aspartic acid have different
acidities with pKa values of 2.1...
asked 2 hours ago -
Would CuCO3 aqueous salt combined with calcium chloride
form a solid precipitate? If so, what would...
asked 2 hours ago -
How do ECM Solutions assist in embedding a culture of continuous
improvement in an organization? (Project...
asked 2 hours ago -
Directions
These directions introduce the idea of Essential Questions.
Since this may be a new concept...
asked 2 hours ago