Question

1. choose the best answer.

what equation shows the relationship between matter and energy?
$e = mc^3$
$e = mc$
$e = m^2c$
$e = mc^2$

Explanation:

Einstein's mass - energy equivalence formula is \(E = mc^{2}\), where \(E\) is energy, \(m\) is mass, and \(c\) is the speed of light in a vacuum (\(c\approx3\times10^{8}\space m/s\)). This formula shows the relationship between matter (represented by mass \(m\)) and energy (\(E\)). The other options (\(E = mc^{3}\), \(E = mc\), \(E = m^{2}c\)) do not conform to the established mass - energy equivalence principle.

Answer:

\(E = mc^{2}\) (the fourth option)