$0.4\hat i + 0.8\hat j + c\hat k$ represents a unit vector when $c$ is
$-0.2$
$\sqrt {0.2} $
$\sqrt {0.8} $
$0$
(b) $\sqrt {{{(0.4)}^2} + {{(0.8)}^2} + {c^2}} = 1$
==> $0.16 + 0.64 + {c^2} = 1$==> $c = \sqrt {0.2} $
Identify the vector quantity among the following
Pick out the two scalar quantities in the following list :
force, angular momentum, work, current, linear momentum, electric field, average velocity, magnetic moment, relative velocity.
The change in a vector may occur due to …..
Position of a particle in a rectangular-co-ordinate system is $(3, 2, 5)$. Then its position vector will be
How can we represent vector quantity ?
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