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07/08/2021 12:21 pm
Topic starter
(a) Write Einstein’s mass-energy equation. Give the meaning of each symbol which occurs in it.
(b) If 25 atomic mass units (u) of radioactive material are destroyed in a nuclear reaction, how much energy is released in MeV?
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07/08/2021 12:23 pm
(a) Einstein’s equation:
E = mc2
where E is the amount of energy produced if mass m is destroyed, and c is the speed of light in vacuum.
(b) 1 atomic mass unit = 931 MeV
25 atomic mass unit = 931 x 25 MeV
= 23275 MeV
23275 MeV of energy is released.