What is the angular momentum of the Sun?
What is the angular momentum of the Sun?
On average, helioseismology yields S = 1.92 10^41 kg m^2 s^-1 for the angular momentum of the Sun.
How did Sun lose angular momentum?
The Sun and Sun-like stars lose angular momentum to their magnetized stellar winds. This braking torque is coupled to the stellar magnetic field, such that changes in the strength and/or geometry of the field modifies the efficiency of this process.
What is the Sun’s angular velocity?
about 2.2 km s-1
The rotational speed of the Sun is about 2.2 km s-1.
Why does Jupiter have more angular momentum than the sun?
We find that the Sun has 64 times more angular momentum in its rotation than in it’s center of mass orbit, and we already concluced that Jupiter has far more angular momentum in its orbit than the Sun has in its rotation. So our conclusion is unchanged.
How did Earth get its sideways momentum?
There is this thing called the Sun. The Sun has gravity that constantly pulls the Earth around it, so that “sideways” becomes “sideways around the Sun”.
Where is most of the angular momentum in the solar system?
Jupiter
Show that most of the angular momentum in the solar system is contained in Jupiter, not the Sun.
How do you calculate the rotational period of the Sun?
To calculate the sidereal period from the synodic value, Let R = sidereal period S=synodic period Then R = S χ 365.26 (S + 365.26) The value of 365.26 is the number of days in an Earth Sidereal year. Solar astronomers have found that the Sun exhibits a differential rotation.
Why does the Sun rotate slowly?
Inside the sun, the photons scatter so frequently that they lose angular momentum, but in the sun’s outer layers, the plasma loses angular momentum while the photons radiate away. All this slows down the sun’s outer edge. It’s similar to a sprinkler with a rotating spray nozzle.
What is r in angular momentum?
L → is the angular velocity. r is the radius (distance between the object and the fixed point about which it revolves) p → is the linear momentum.
How come Earth doesn’t fall into the Sun?
The earth is literally falling towards the sun under its immense gravity. So why don’t we hit the sun and burn up? Fortunately for us, the earth has a lot of sideways momentum. Because of this sideways momentum, the earth is continually falling towards the sun and missing it.
Why is the Sun not moving?
Because it is a gas, it does not rotate like a solid. The Sun actually spins faster at its equator than at its poles. The Sun rotates once every 24 days at its equator, but only once every 35 near its poles. We know this by watching the motion of sunspots and other solar features move across the Sun.
What is the rotational rate of the Sun?
At the equator, the solar rotation period is 24.47 days. This is called the sidereal rotation period, and should not be confused with the synodic rotation period of 26.24 days, which is the time for a fixed feature on the Sun to rotate to the same apparent position as viewed from Earth.
How do you calculate the rotation rate of a sunspot in degrees per day?
For each sunspot, the rotation is calculated by subtracting the initial longitude from the final longitude and dividing by the number of days between observations. This answer will be in degrees per day and is a measure of the rotation rate of the Sun. Rotation rate is 48/4 = 12 degrees per day.
How to get moment from angular momentum?
– Find the moment of inertia tensor for these masses when they start rotating. – Show that the angular momentum is in the same direction as the angular velocity. – Can you find an angular velocity vector that produces an angular momentum vector in a different direction?
How do you find angular momentum in physics?
p = m*v. With a bit of a simplification, angular momentum ( L ) is defined as the distance of the object from a rotation axis multiplied by the linear momentum: L = r*p or L = mvr.
How to find angular momentum of a system?
p = m*v. With a bit of a simplification, angular momentum (L) is defined as the distance of the object from a rotation axis multiplied by the linear momentum: L = r*p or L = mvr. Is the angular momentum of a system always conserved?
What causes the conservation of angular momentum?
In the absence of external torques,a system’s total angular momentum is conserved.