# What is the relationship between matter and energy?

Jun 22, 2015

$E = m {c}^{2}$
In $E = m {c}^{2}$;
$E$ is the energy in Joules;
$c = 3 \times {10}^{8} \frac{m}{s}$ is the speed of light in vacuo;
$m$ is the mass in kg.