What is the angular momentum of a particle at rest ?
Hint. `vecv=0`.

Explanation

To find the angular momentum of a particle at rest, we can follow these steps:

### Step 1: Understand the definition of angular momentum
Angular momentum (L) of a particle is defined as the cross product of the position vector (r) and the linear momentum vector (p):
\[ \vec{L} = \vec{r} \times \vec{p} \]

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