If \( \vec{P}=\vec{Q} \) then which of the following is NOT correct (a) \( \hat{P}=\hat{Q} \) (b...

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If \( \vec{P}=\vec{Q} \) then which of the following is NOT correct
(a) \( \hat{P}=\hat{Q} \)
(b) \( |\vec{P}|=|\vec{Q}| \)
(c) \( P \hat{Q}=Q \hat{P} \)
(d) \( \vec{P}+\vec{Q}=\hat{P}+\hat{Q} \)
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