Yes. The gauge particles for the electromagnetic force are (massless) photons, so there's no distance limit to electromagnetic interactions.
electric force
Nothing particular happens specifically to the distance.
Gravitational Forces
Air and water.
No. Gases and liquids are matter. Matter is not a force; it is acted upon by forces. Gases and liquids can exert a force or transmit a force, but they themselves are not forces.
yes. same forces repel each other and opposite forces attract.
well if two bodies negatively charged are brought near each other, then there is a strong force of repulsion, as the electrostatic lines of forces terminate at these bodies, they exert later pressure on each other, hence the bodies repeal each other
if we are talking about just forces, yes they are conservative since they don't change the total mechanical energy of an object. if it is about the system in which our bodies are involved, they are not since they produce some heat. however the way the problem asked is refering to first explanation because it is asked the forces our bodies exert.
If the distance between their centers is reduced to 1/3,then the force between them is 3.645 N.
Gravity.
a. moving molecules that exert forces.
ocean currents, local geography,elevation,distance from large bodies of water and latitude
electric force
The force exerted by charged particles is called a "coulombic" force.
We are always asked questions about one body exerting gravitational force,and we must emphasize again: That's the least helpful way to think about it.Gravitational force always involves two bodies. The strength of the force dependson the mass of both bodies, the force acts along the line between the centers ofboth bodies, and both bodies feel gravitational forces with the same strength.Whatever force the earth 'exerts' on you that draws you toward it, you exert thesame force on the earth that draws the earth toward you.
action and reaction forces
Nothing particular happens specifically to the distance.