Given a cube with point charges q on each of its vertices. Calculate the force exerted on any of the charges due to rest of the 7 charges.

Explanation

To calculate the force exerted on any of the charges at the vertices of a cube due to the other seven charges, we can follow these steps:

### Step 1: Identify the Configuration
We have a cube with point charges \( q \) located at each of its vertices. We will calculate the force on one charge due to the other seven charges.

### Step 2: Determine Distances
For the charge at one vertex, we need to consider the distances to the other charges:
- There are 3 charges at a distance \( a \) (the edge length of the cube).
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