A force \( \vec{F}=(6.00 \hat{\mathrm{i}}-4.00 \hat{\mathrm{j}}) \mathrm{N} \) acts on a particl...

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A force \( \vec{F}=(6.00 \hat{\mathrm{i}}-4.00 \hat{\mathrm{j}}) \mathrm{N} \) acts on a particle with position vector \( \vec{r}=(-3.00 \hat{\mathrm{i}}+1.00 \hat{\mathrm{j}}) \mathrm{m} \). Find the angle
between \( \vec{r} \) and \( \vec{F} \).
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