If \(\overrightarrow {PQ} = \left( {\begin{array}{*{20}{c}} a\\ b\\ c \end{array}} \right)\) then the magnitude of \(\overrightarrow {PQ}\) is written as \(\left ...

For example, when you apply a force to push a door open. Vector quantities have both a magnitude and a direction. Vector quantities are represented using arrows. The larger the arrow the greater ...