$1.31 imes 10^3$ J/mol

$2.18 imes 10^{-20}$ J/mol

$1.31 imes 10^6$ J/mol

$8.21 imes 10^5$ J/mol

$\left[ {{\rm{M}}{{\rm{L}}^{ - 3}}{\rm{TA}}} \right]$

$\left[ {{{\rm{K}}^0}{\rm{L}}{{\rm{T}}^{ - 2}}{{\rm{A}}^0}} \right]$

$\left[ {{\rm{M}}{{\rm{L}}^1}{{\rm{T}}^{ - 2}}{{\rm{A}}^{ - 1}}} \right]$

$\left[ {{\rm{M}}{{\rm{L}}^2}{{\rm{T}}^{ - 2}}{{\rm{A}}^0}} \right]$

20 mg

200 mg

2000 mg

0.002 mg

J

${\rm{Jk}}{{\rm{g}}^{ - 1}}$

${\rm{Jkg}}$

${\rm{Jk}}{{\rm{g}}^2}$

$M{T^{ - 3}}{K^{ - 4}}$

$M{L^2}{T^{ - 2}}{K^{ - 4}}$

$M{L^2}{T^{ - 2}}$

$M{T^{ - 2}}{L^0}$

$\left[ {{{\rm{M}}^0}{\rm{AL}}{{\rm{T}}^0}} \right]$

$\left[ {{{\rm{M}}^0}{\rm{A}}{{\rm{L}}^{ - 1}}{{\rm{T}}^0}} \right]$

$\left[ {{{\rm{M}}^0}{\rm{A}}{{\rm{L}}^2}{{\rm{T}}^0}} \right]$

$\left[ {{\rm{M}}{{\rm{}}}{{\rm{T}}^{ - 2}}{{\rm{A}}^{ - 1}}} \right]$

A natural unit system where certain fundamental constants are set to 1

SI units

CGS units

MKS units

Work, energy, force

Velocity, momentum, impulse

Potential energy, kinetic energy, momentum

Pressure, stress, coefficient of elasticity

$\frac{1}{{\sqrt {RC} }}$

$\frac{R}{L}$

$\frac{1}{{LC}}$

$\frac{C}{L}$

${\rm{m}}{{\rm{s}}^{ - 1}}$

${{\rm{m}}^2}{{\rm{s}}^{ - 2}}$

${{\rm{s}}^2}{{\rm{m}}^{ - 2}}$

${\rm{s}}{{\rm{m}}^{ - 1}}$

$\left[ {{\rm{ML}}{{\rm{T}}^{ - 1}}} \right]$

$\left[ {{{\rm{M}}^0}{\rm{LT}}} \right]$

$\left[ {{{\rm{M}}^0}{{\rm{L}}^0}{\rm{T}}} \right]$

None of these