If \(\vec{p}\) is the linear momentum and \(\vec{J}\) the angular momentum, the Poisson bracket \(\{\vec{p}, \vec{J} . \hat{n}\}\) equals (here \(\hat{n}\) is an arbitrary constant vector)
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\(\vec{p} \times \hat{n}\)
2
\(\hat{n} \times \vec{p}\)
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\(2 \vec{p} \times \hat{r}\)
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\(\hat{p} \times \hat{r}\)
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