Question

A star-system with N = 5 × 10^5 identical stars of m=1M⊙, is self gravitating and...

A star-system with N = 5 × 10^5 identical stars of m=1M⊙, is self gravitating and has a velocity dispersion of σ = 10km s^−1 and an angular half-light radius θ = 3 arc minutes. Using this info, find the distance to the system.

Science   Advanced-Physics   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
A binary pulsar is a system of two neutron stars of equal mass (each about 1.4...
A binary pulsar is a system of two neutron stars of equal mass (each about 1.4 times the mass of the sun and a radius of 10km). A particular binary pulsar has two neutron stars orbiting around their center of mass, and separated by a (center to center) distance of d= 7.0*10^8m. Assume the orbit is circular. a) Calculate the orbital speed of the stars in meters/second. b) Calculate the magnitude of the centripetal acceleration of one of the stars...
For a vibrating system, m = 10 kg, k = 2500 N/m, and c = 45...
For a vibrating system, m = 10 kg, k = 2500 N/m, and c = 45 N*s/m. A harmonic force of amplitude 180 N and frequency 3.5 Hz acts on the mass. If the initial displacement and velocity of the mass are 15 mm and 5 m/s, respectively, find the complete solution representing the motion of the mass.
A sphere of radius 10 m and a mass m1 = 5 kg is rolling without...
A sphere of radius 10 m and a mass m1 = 5 kg is rolling without slipping on a horizotal surface with a velocity V = 20 m/s to the East. It collides with a stationery sphere of mass m2 =15 kg. After the collision both masses rolls in different directions and m1 with a velocity V = 5 m/s. 1) Find the velocity of m2 after collision 2) Find the angular velocity of m2 after the collision 3) Was...
1. Find the moment of inertia of a stick of length 4 m and mass 10...
1. Find the moment of inertia of a stick of length 4 m and mass 10 kg that is rotated about an axis that is 30 % from the left end of the stick. Hint do the integration of r^2 dm 2. A 123 kg merry go round with a 5 m radius rotates on a vertical axis. If I push at the edge with a force of 188 N, find the angular acceleration. The moment of inertia of disk...
2. A 100 cm rod is free to pivot about one end, and a 50 N...
2. A 100 cm rod is free to pivot about one end, and a 50 N force is applied at the other end at an angle 20 degree to the horizontal. (i) Calculate the lever arm of the rod. (ii) Calculate the torque about the pivot point. 3. Joe weighing 500 N sits 0.5 m to the left of center of the seesaw 2 m long. Liz sits at the end on the opposite side of a seesaw of mass...
1. A soup can rolks down a ramp from a height of 7 m. Find the...
1. A soup can rolks down a ramp from a height of 7 m. Find the velocity at the bottom. I = 1/2 m r^2 2. If a communication satellite is going to be placed in orbit around earth at a distance of 8×10^8 m from center, fond the speed it needs to move in order to stay in orbit. The mass of the earth is 6×?10^24 kg. G=6.67×10^-11 N m^2/kg^2. 3. A baseball bat has a length of 1.2...
The mass of the Sun M = 2.0×1030 kg, and G = 6.67×10-11 Nm2 /kg2 a)....
The mass of the Sun M = 2.0×1030 kg, and G = 6.67×10-11 Nm2 /kg2 a). A spaceship of mass m = 7.5×104 kg is on a circular orbit of radius r1 = 2.5×1011 m around the Sun. The captain of that spaceship decides to increase the radius of his orbit to r2 = 4.0×1011 m. What is the minimum amount of energy he has to expand using his engines to move to this higher orbit? [Assume that the ship...
An eagle is circling looking for prey, it completes a circle of radius 10 m every...
An eagle is circling looking for prey, it completes a circle of radius 10 m every 5 s. Birds can use their skills to make air exert a force on them in any direction. a) Draw a diagrams of the eagle’s motion, indicate the velocity vector and the coordinate system. b) What are the linear and angular speed of the eagle? c) If the eagle increases its speed over thirty seconds, to complete one circle (r=10m) every 3s, calculate the...
1) A torque of 1.20 N m is applied to a thin rod of mass 2.50...
1) A torque of 1.20 N m is applied to a thin rod of mass 2.50 kg and length 50.0 cm pivoted about its center and at rest. How fast is the rod spinning after 4.25 s? a. 32.6 rad/s b. 8.16 rad/s c. 97.9 rad/s d. 24.5 rad/s 2) A torque of 1.20 N m is applied to a thin rod of mass 2.50 kg and length 50.0 cm pivoted about one end and at rest. How fast is...
An eagle is circling looking for prey, it completes a circle of radius 10 m every...
An eagle is circling looking for prey, it completes a circle of radius 10 m every 5 s. Birds can use their skills to make air exert a force on them in any direction. a) Draw a diagrams of the eagle’s motion, indicate the velocity vector and the coordinate system. (4 points) b) What are the linear and angular speed of the eagle? (3 points) c) If the eagle increases its speed over thirty seconds, to complete one circle (r=10m)...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT