Daily Curiosityby Erudico

Mathematics · Question

E = MC3

Answer

False

The story behind the answer

False. The correct relation is E = mc^2, not mc^3. In algebra, the superscript 2 means “squared,” so c^2 = c × c. Writing c^3 (cubed) changes the value and makes the equation dimensionally inconsistent: mass × c^2 has units of energy (kg·m^2/s^2), but mass × c^3 would give kg·m^3/s^3, which is not energy.

This famous formula from Einstein’s special relativity shows mass-energy equivalence: a small amount of mass corresponds to a large amount of energy because c (the speed of light) is huge, and squaring it amplifies the effect. Memory tip: “Square the speed, not cube”—E equals m times c squared.

More to discover

You can square root a negative number with an imaginary number "i". An isosceles triangle has two sides of equal length as opposed to three. The sum of any two odd integers is odd. The 'Squaring the Circle' problem is solvable.