নোটেশন
$c$
Speed of light in vacuum
$E$
Energy
$E_k$
Kinetic energy
$E_p$
Potential energy
$F$
Force
$G$
Newton’s gravitational constant
$h$
Planck’s constant
$k$
Boltzmann constant
$m$
Mass
$t$
Time
$v$
Velocity
$v_s$
Speed of sound in a medium