Nuclear energy (AQA A-Level Physics): Quizzes

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Mass and energy
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What does cc represent in Einstein's equation E=mc2E = mc^2?

Speed of light in vacuum

What happens to an object's mass when energy is added to it?

Mass increases

How does mass before radioactive decay compare to mass after?

Mass before exceeds mass after

One atomic mass unit (u) is defined as what fraction of a carbon-12 atom's mass?

One-twelfth

What is the energy equivalent of 1 atomic mass unit?

931.5 MeV

What is the binding energy of a nucleus?

Work to separate all nucleons

How does mass of separated nucleons compare to mass of the bound nucleus?

Separated nucleons have greater mass

A nucleus has separated nucleons mass 236.909 u and bound mass 234.993 u. Find binding energy.

1785 MeV

How is binding energy per nucleon calculated?

Total binding energy / mass number

Which nucleus has the highest binding energy per nucleon, making it most stable?

Iron-56

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