Two objects can influence each other at a distance through the force of gravity. This force acts between all objects with mass and is described by Newton's Law of Universal Gravitation. The strength of the force is determined by the masses of the objects and the distance between them.
Yes, two objects can influence each other without being in direct contact. This is possible through the force of electromagnetism. Objects with electric charge can exert a force on each other at a distance, as described by Coulomb's Law. This also applies to objects with magnetic fields.
Yes, the influence between two objects at a distance can change over time. This is because the force of gravity and electromagnetism are both dependent on the distance between the objects. As the distance changes, the force between the objects also changes.
No, there is no known limit to how far two objects can influence each other at a distance. The force of gravity and electromagnetism are both considered to be infinite in range, meaning they can act on objects regardless of how far apart they are.
No, the influence between two objects at a distance cannot be instantaneous. According to Einstein's theory of relativity, nothing can travel faster than the speed of light. This means that it takes time for the force of gravity and electromagnetism to travel between two objects, even if they are far apart.