$1.5 imes {10^7}kg$

$1.5 imes {10^{10}}kg$

$6.67 imes {10^{ - 11}}kg$

$6.67 imes {10^{ - 8}}\,kg$

Volt-coulomb

MeV-sec

$Henry{(ampere)^2}$

$Farad - {(volt)^2}$

$Watt\;{K^{ - 1}}mo{l^{ - 1}}$

$Newton\;{K^{ - 1}}mo{l^{ - 1}}$

$Joule\;{K^{ - 1}}mo{l^{ - 1}}$

$Erg\;{K^{ - 1}}mo{l^{ - 1}}$

The dimensions of each term in a physically valid equation must be the same.

All physical quantities must have the same dimensions.

Only quantities with the same dimensions can be added or subtracted.

The numerical values of each term in an equation must be the same.

v = u + at

s = ut + at

v^2 = u^2 + a

s = vt^2

One minute

Half minute

One degree

Half degree

$\sqrt {LC}$

C/L

CL

${L^2}/{C^2}$

The angle between a celestial object and the horizon

The distance between two celestial objects

The speed of a vessel at sea

The depth of the ocean

Potential

Work

Force

Electric intensity

${n_1}{u_1} = {n_2}{u_2}$

${n_1}{u_1} + \;{n_2}{u_2} = 0$

${n_1}{n_2} = {u_1}{u_2}$

$\left( {{n_1} + {u_1}} \right) = \left( {{n_2} + {u_2}} \right)$

$1 imes {10^{ - 3}}$

$3.6 imes {10^{ - 3}}$

$1 imes {10^{ - 5}}$

$6 imes {10^{ - 4}}$