Position of a particle in a rectangular-co-ordinate system is $(3, 2, 5)$. Then its position vector will be
$3\hat i + 5\hat j + 2\hat k$
$3\hat i + 2\hat j + 5\hat k$
$5\hat i + 3\hat j + 2\hat k$
None of these
Angular momentum is
If $A = 3\hat i + 4\hat j$ and $B = 7\hat i + 24\hat j,$the vector having the same magnitude as $B$ and parallel to $A$ is
The unit vector parallel to the resultant of the vectors $\vec A = 4\hat i + 3\hat j + 6\hat k$ and $\vec B = - \hat i + 3\hat j - 8\hat k$ is
Any vector in an arbitrary direction can always be replaced by two (or three)
Given vector $\overrightarrow A = 2\hat i + 3\hat j, $ the angle between $\overrightarrow A $and $y-$axis is