$<2, 2, 2> = \ldots \ldots$

If $p = 7i - 2j + 3k$ and $q = 3i + j + 5k$,then $|p - 2q| = \dots$

The value of $x$ if $x(\hat{i}+\hat{j}+\hat{k})$ is a unit vector is:

Classify the following measure as a scalar or a vector: $20 \, m/s^{2}$.

The sum of the lengths of projections of $p \hat{i} + q \hat{j} + r \hat{k}$ on the coordinate axes, where $p = 4, q = -5, r = 7$, is: (in $\text{ units}$)

If $\bar{x}$ is a non-zero vector and $k > 0, k \neq 1$,then $\frac{-k \bar{x}}{|\bar{x}|}$ is $.......$ .