Neutron flux and current are both scalars; fluence is a vector indicating the

net number of neutrons per unit area over time.

Neutron fluence is the flux divided by the time; neutron current is a vector given by the dot product of neutron density and velocity

Neutron flux is a

scalar proportional to neutron density and speed; neutron current is a

vector given by the product of neutron density and velocity

A larger number of collisions will be required

The number of collisions will depend on the scattering cross section only

A smaller number of collisions will be required

The number of collisions will be independent of A

Loss of both offsite and onsite power

Lack of sufficient backup generators

Inadequate training of the plant personnel

Failure of the reactor protection systems

Assure lowest achievable radiation protection

As low as reasonably practicable

As low as reasonably possible

Always look at regulatory practices

1.0004

0.99996

0.9996

The increase in the total number of nucleons after U-235 absorbs a neutron results in a more massive nucleus

The total binding energy of the fission products is higher than U-235 and the fission neutron

The fission fragments are heavier and have lower potential energy than the original nucleus

Fission causes electrons to be stripped from atoms and energy is released when they recombine