Position of a particle in a rectangular-co-ordinate system is $(3, 2, 5)$. Then its position vector will be
Position of a particle in a rectangular-co-ordinate system is $(3, 2, 5)$. Then its position vector will be
- A
$3\hat i + 5\hat j + 2\hat k$
- B
$3\hat i + 2\hat j + 5\hat k$
- C
$5\hat i + 3\hat j + 2\hat k$
- D
None of these
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With respect to a rectangular cartesian coordinate system, three vectors are expressed as
$\vec a = 4\hat i - \hat j$, $\vec b = - 3\hat i + 2\hat j$ and $\vec c = - \hat k$
where $\hat i,\,\hat j,\,\hat k$ are unit vectors, along the $X, Y $ and $Z-$axis respectively. The unit vectors $\hat r$ along the direction of sum of these vector is
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$\vec a = 4\hat i - \hat j$, $\vec b = - 3\hat i + 2\hat j$ and $\vec c = - \hat k$
where $\hat i,\,\hat j,\,\hat k$ are unit vectors, along the $X, Y $ and $Z-$axis respectively. The unit vectors $\hat r$ along the direction of sum of these vector is
Define scalar and vector physical quantities with their examples.
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If $\vec P = \vec Q$ then which of the following is NOT correct
If $\vec P = \vec Q$ then which of the following is NOT correct