The quantity `(2U)|(fkT)` represents (where `U =` internal energy of gas)

The quantity `(2U)/(fkT)` represents (where `U =` internal energy of gas)
The quantity `(2U)|(fkT)` represents (where `U =` internal energy of gas)
The quantity `(2U)|(fkT)` represents (where `U =` internal energy of gas)
The quantity `(2U)|(fkT)` represents (where `U =` internal energy of gas)

energy