A particle moves from a point A $\left(3,2,-1\right)$ to the point B $\left(2,-1,4\right)$ under the effect of force F =4i-3j+2k . The work done by the force is $\_\_\_\_\_\_$ units.

$\left|3i-4j+5k\right|=\_\_\_\_\_\_$

If $\overline{a} =a_{1}i+a_{2}j+a_{3}k$ then $\hat{\overline{a}}=\_\_\_\_\_\_$

If $\overline{x} =\left(2,1\right)$ and $\overline{y} =\left(-1,3\right)$ then $2\overline{x} + 2\overline{y} =\_\_\_\_\_\_$

If $\overline{x} =\left(1,1,1\right)$ , $\overline{y} =\left(1,2,3\right)$ , $\overline{z} =\left(1,2,-1\right)$ then $\overline{x}.\left(\overline{y}-\overline{z}\right)=\_\_\_\_\_\_$

If $\overline{x} =\left(a,4,2a\right)$ and $\overline{y} =\left(2a,-1,a\right)$ are perpendicular to each other then $a=\_\_\_\_\_\_$

if $\overline{x} =i+3j-2k$ and $\overline{y} =4i-2j-k$ then $\left(\overline{x} \hat{} \overline{y}\right)=\_\_\_\_\_\_$

if $\overline{x} =i+2j+k$ and $\overline{y} =i-j+k$ then $\left(\overline{x}+\overline{y}\right).\left(\overline{x}-\overline{y}\right)=\_\_\_\_\_\_$

If $\overline{x} =\left(1,2,3\right)$ and $\overline{y} =\left(-1,3,5\right)$ then $\left(\overline{x}\times \overline{y}\right)=\_\_\_\_\_\_$

A particle moves from a point  i-j to the point  3i+k under the effect of force  i+j-2k and 2i+2j-4k . The work done by the force is $\_\_\_\_\_\_$ units.