State two characteristic properties of nuclear forces.

Explanation

**Step-by-Step Solution:**

1. **Definition of Nuclear Forces:**
- Nuclear forces are the interactions that occur between nucleons, which include protons and neutrons within an atomic nucleus.

2. **Characteristic Property 1: Short Range:**
- One of the primary characteristics of nuclear forces is that they are extremely short-range forces. The range of these forces is approximately \(10^{-15}\) meters (1 femtometer). This means that nuclear forces are effective only at very small distances, typically within the size of an atomic nucleus.

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