A greater mass creates a stronger gravitational pull.
A natural moon is one that was formed at the same time as the parent planet. Its mass will always be less than the planet it orbits.
The definition of a planet has a wide range of different types of bodies. A planet in this solar system will refer to a body that orbits the sun.
Depends on the mass of the planet, its speed and the mass of the sun. Our planets revolve because they have the right speed and mass to revolve steadily.
Yes, it can. The higher the planet's mass, the more satellites it can attract at greater distances, and the more it can keep in orbit around it.
Gravity. As the planet rotates it's mass holds it's moons within it's orbit. The larger the planet the stronger is its gravitational pull.
No. A planet's gravitational pull is determined by the planet's mass. A planet's orbital speed is determined by the the mass of the Sun and the planet's distance from the Sun.
No it does not have any effect on the planet. For Example: Pluto is very far away from the sun. It doesn't have that much mass.
Orbits a star and has enough mass to have cleared its orbit of debris.
A natural moon is one that was formed at the same time as the parent planet. Its mass will always be less than the planet it orbits.
There is insufficient information provided for a meaningful answer. What is the mass of each moon? How far are each of them away from the planet? What speed are they travelling? What are their orbits, particularly in relation to each other?
The definition of a planet has a wide range of different types of bodies. A planet in this solar system will refer to a body that orbits the sun.
Density is not something that changes just because we're on earth. Density is a universal concept of how tightly packed the mass of an object is packed. If you're trying to figure out why gravity is different from planet to planet, which is just caused by the speed of which the planet orbits the sun/object.
mass and density
no
Two objects of the same mass will also move in elliptical orbits. Whether the two bodies are of the same mass or different, one focus of the elliptical orbit is the center of mass (barycenter).
It has no direct affect on the speed of an object. It does affect the energy content of the speeding object.
It has no direct affect on the speed of an object. It does affect the energy content of the speeding object.