The effective energies of the system are carefully measured and analyzed.

The elastic energies stored in the rubber band are released when it is stretched.

Renewable sources such as wind and solar provide clean electric energies.

Excitation energies are important in understanding the behavior of atoms.

The interfacial energies between the two liquids are significantly different.

The internal energies of the system are constantly changing.

The ionization energies of these elements vary greatly.

The lattice energies of these compounds are exceptionally high.

Mass energies are fundamental concepts in physics.

The mass-energies of the particles in the system are calculated using the equation E=mc^2.