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What are some of Copernicus' discoveries and contributions?
he discovered that the earth revolved around the sun (heliocentricity) and at that time everyone believed that the sun/planets revolved around the earth (geocentricity)
What did Copernicus believe about the earth and the sun?
He believed in a heliocentric universe, or a universe where all of the planets revolve around the sun.
What is heliocentrism?
In Heliocentrism, the Sun (Helios) is said to be at the centre of the universe.
What is a real life example of a rotation?
Earth going around the sun.
What was Copernicus' new concept of the universe?
That Earth went around the sun.
What is the significance of the angular momentum of Earth around the Sun in relation to its orbit and rotational motion?
The angular momentum of Earth around the Sun is important because it helps to maintain the stability of Earth's orbit and rotational motion. Angular momentum is a measure of how fast an object is spinning and how spread out its mass is. In the case of Earth, its angular momentum keeps it in a stable orbit around the Sun and helps to regulate its rotation, ensuring that it maintains a consistent speed and direction as it moves through space.
Does angular momentum of a planet depend on its mass and distance from the sun?
Of course! The mass controls its speed, momentum, and how it tilts as its rotation around the sun continues. As a planet rotates on its axis, it will tilt at the sun, which is a big gravity machine. The earth is believe to be tilted because of collisions that are believed to have taken place billions of years ago. The earth collided with other proto planets in space, and became tilted. - pianodriver
Do planets revolve around the sun at the same speed?
No, planets do not revolve around the sun at the same speed. Their orbital speeds depend on their distance from the sun - planets closer to the sun have shorter orbital periods and faster speeds, while those further away have longer orbital periods and slower speeds.
What is Earth's angular momentum when it is at perihelion in its orbit?
Earth's angular momentum remains constant throughout its orbit around the Sun due to the conservation of angular momentum. The angular momentum at perihelion (closest point to the Sun) is the same as at any other point in its orbit.
The earths angular momentum when it is nearest to the sun is greater then when it is farthest from the sun?
This statement is incorrect. Earth's angular momentum remains constant throughout its orbit around the Sun. Although Earth moves faster when it is closer to the Sun due to Kepler's second law of planetary motion, this is balanced by its greater distance from the Sun when it is farthest, resulting in a constant angular momentum.
What is Sgr A?
Perhaps you mean Sgr A*, or Sagittarius A* (written with an asterisk at the end), an object believed to be a supermassive black hole, in the center of your Milky Way. It is estimated that this black hole has 4 million times the mass of our Sun.
How much greater is the angular momentum of the Earth orbiting about the sun than the moon orbiting about the Earth?
Assuming a circular orbit for simplicity, the magnitude of the angular momentum is rmv - that is, the radius of the orbit times the mass times the velocity. I'll leave the details of the calculations to you; basically you have to look up:Earth's, or the Moon's, orbital radius (the distance from Sun to Earth vs. the distance from Earth to the Moon);The mass of the orbiting object;Its velocity in orbit.Then you must divide one by the other, since I assume it's the ratio you are interested in.
How do the moons stay in orbit around the sun?
The moons are around planets, planets are around the sun. But basically the orbit is a mix of forward momentum and the the pull towards the sun, this creats an angular movement. when the planet moves forward, this angular movement is now forward momentum and gravity is still pulling it towards the sun creating a angular movement and when added together this is roughly a circle that goes all around the sun.
What describes the speed of a planet traveling in an elliptical orbit around the Sun?
As the planet approaches perihelion (point of nearest approach to the Sun), its orbital velocity gets faster, and it is fastest at perihelion. Similarly, at aphelion (point of furthest approach to the Sun), the orbital velocity is slowest.
Is the moon an angular distance from the sun increasing or decreasing during waning phases?
During the waning phases of the moon, the angular distance from the Sun is generally increasing. This is because, as the moon transitions from a full moon to a new moon, it moves away from the Sun in the sky, resulting in greater angular separation. Consequently, the waning phases reflect the moon's orbit around Earth, causing this increasing angular distance.
What is the difference between orbital velocity and angular velocity?
Orbital Velocity is calculated in m/s where as angular velocity is calculated in rad/s.. Answer is very clear.. angular velocity is calculated when body is rotating around a axis and a reference point is needed to calculate it.. where as orbital velocity is calculated when body is moving around a bado in circular path, nt around itself... e.g. Earth rotates around so it have angular velocity .. it also rotates around sun in orbit so it has Orbital velocity also :)
Which quantity remain constant in planetary motion as seen from sun?
The angular momentum of a planet remains constant in its motion around the sun. This is due to the conservation of angular momentum, which dictates that the product of the planet's mass, velocity, and distance from the sun remains the same as the planet orbits.
