A cubical region of space with side lengths 0.05 m contains a uniform magnetic field. If the total magnetic energy stored in this region is `pi` J, what is the magnitude of the magnetic field?

Explanation

To solve the problem, we need to find the magnitude of the magnetic field (B) in a cubical region of space given the total magnetic energy stored in that region.

### Step-by-Step Solution:

1. **Identify the given values**:
- Side length of the cube, \( L = 0.05 \, \text{m} \)
- Total magnetic energy, \( U = \pi \, \text{J} \)

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