The equation

E = mc2
was developed by which scientist?
Becquerel
Einstein
Curie
Rutherford

Identify what each of the letters in the equation stands for.
E:
relativity
energy
entropy
efficiency

m:
mass
atomic number
momentum
mass number

c:
charge
speed of light
counts per minute
cosmic rays

E: energy

m: mass
c: speed of light