What the expression for (i) Newton's law gravitational force (ii) Coulomb's law .

Explanation

To answer the question regarding the expressions for Newton's law of gravitational force and Coulomb's law, we can break it down into two parts:

### Step-by-Step Solution:

#### (i) Newton's Law of Gravitational Force

1. **Understanding the Law**: Newton's law of gravitation states that every point mass attracts every other point mass with a force that is directly proportional to the product of their masses and inversely proportional to the square of the distance between them.

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