In $S = a + bt + c{t^2}$. $S$ is measured in metres and $t$ in seconds. The unit of $c$ is
None
$m$
$m{s^{ - 1}}$
$m{s^{ - 2}}$
The $S.I.$ unit of gravitational potential is
What are the units of $K = 1/4\pi {\varepsilon _0}$
Which of the following is a unit that of force?
The unit for nuclear dose given to a patient is
Which is the correct unit for measuring nuclear radii