List at least six physical quantities that have the dimensional formula $ML^2T^{-2}$.

$Assertion$ : The dimensional formula for relative velocity is the same as that of the change in velocity.
$Reason$ : Relative velocity of $P$ with respect to $Q$ is the ratio of the velocity of $P$ and that of $Q$.

Which of the following is the dimensional formula for viscosity?

Two quantities $A$ and $B$ are related by the equation $A/B = m$,where $m$ is linear density and $A$ is force. The dimensions of $B$ are equivalent to which of the following?

Dimensions of the coefficient of viscosity are

The dimensional formula of permeability of free space $\mu_0$ is