If $\vec{a}=2 i$ and $\vec{b}=3 j$, then value $\vec{a} \cdot \vec{b}$ is

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Professor PC Thomas Classes · Answer

$\vec{a} \cdot \vec{b} = (2\hat{i}) \cdot (3\hat{j}) = 6(\hat{i} \cdot \hat{j}) = 0$.