If $\vec{P}+\vec{Q}=\vec{P}-\vec{Q}$, then
$\vec{P}=\overrightarrow{0}$
$\vec{Q}=\overrightarrow{0}$
$|\vec{P}|=1$
$|\vec{Q}|=1$
(b) $\vec{P}+\vec{Q} =\vec{P}-\vec{Q}$
$\Rightarrow \vec{Q} =0$
The vectors $\vec{A}$ and $\vec{B}$ are such that
$|\vec{A}+\vec{B}|=|\vec{A}-\vec{B}|$
The angle between the two vectors is
If $\vec{P}+\vec{Q}=\overrightarrow{0}$, then which of the following is necessarily true?
Let the angle between two nonzero vectors $\overrightarrow A $ and $\overrightarrow B $ be $120^°$ and resultant be $\overrightarrow C $
If the resultant of $n$ forces of different magnitudes acting at a point is zero, then the minimum value of $n$ is
The vectors $5i + 8j$ and $2i + 7j$ are added. The magnitude of the sum of these vector is
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