The magnitude of non-contact force depends on several factors, including the distance between two bodies, the mass of the two bodies, and the chemical composition of the two bodies. Let's discuss each of these factors in detail:

**Distance between two bodies:**
The magnitude of non-contact forces, such as gravitational force and electrostatic force, is inversely proportional to the square of the distance between two bodies. According to Newton's law of universal gravitation, the gravitational force between two objects decreases as the distance between them increases. Similarly, according to Coulomb's law, the electrostatic force between two charged objects also decreases with an increase in distance. Therefore, the magnitude of non-contact force is directly influenced by the distance between two bodies.

**Mass of the two bodies:**
The mass of the two bodies involved in a non-contact force also affects its magnitude. In the case of the gravitational force, the magnitude of the force is directly proportional to the product of the masses of the two objects. This means that if one or both of the masses increase, the gravitational force between them will also increase. On the other hand, in the case of electrostatic force, the magnitude of the force is not directly dependent on the masses of the charged objects, but it can be influenced by the charge distribution on the objects, which is related to their mass.

**Chemical composition of the two bodies:**
The chemical composition of the two bodies can also affect the magnitude of non-contact forces. For example, in the case of the electrostatic force, the magnitude of the force is directly influenced by the charge on the objects. Different materials have different abilities to hold or transfer charge, which affects the magnitude of the electrostatic force between them. Similarly, in the case of magnetic forces, the magnetic properties of materials can influence the magnitude of the force.

In conclusion, the magnitude of non-contact forces depends on the distance between two bodies, the mass of the two bodies, and the chemical composition of the two bodies. These factors play crucial roles in determining the strength of non-contact forces such as gravitational force, electrostatic force, and magnetic force.

It's answer should be 1st part
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