Which of the following forces cannot be a resultant of $5\, N$ and $7\, N$ forces (in $, N$)?

At what angle do two forces $(x + y)$ and $(x - y)$ act so that their resultant is $\sqrt{x^2 + y^2}$?

$A$ unit vector in the direction of the resultant vector of $\vec{A} = -2 \hat{i} + 3 \hat{j} + \hat{k}$ and $\vec{B} = \hat{i} + 2 \hat{j} - 4 \hat{k}$ is

Find the magnitude and direction of the resultant of two vectors $A$ and $B$ in terms of their magnitudes and the angle $\theta$ between them.

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: (in $^{\circ}$)

When $n$ vectors of different magnitudes are added,we get a null vector. Then the value of $n$ cannot be