The unit vector along $\hat i + \hat j$ is
$\hat k$
$\hat i + \hat j$
$\frac{{\hat i + \hat j}}{{\sqrt 2 }}$
$\frac{{\hat i + \hat j}}{2}$
Explain null vector. Explain the physical significance of null vector.
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 angle made by the vector $A = \hat i + \hat j$ with $x-$ axis is ....... $^o$
The change in a vector may occur due to .....
A plane starts its flight in direction $\theta $ with run-way. If the distance covered by it in horizontal and vertical both directions is $600\, m$, then find $\theta $.