Sometimes other signs and symptoms precede sudden cardiac arrest. These may include fatigue, fainting, blackouts, dizziness, chest pain, shortness of breath, weakness, palpitations or vomiting. But sudden cardiac arrest often occurs with no warning.
In the core of nuclear reactors, the fission of uranium atoms releases energy that heats water to about 520 degrees Farenheit. This hot water is then used to spin turbines that are connected to generators, producing electricity.
Nuclear fission. In nuclear fission, the nuclei of atoms are split, causing the energy to be released. The atomic bomb and nuclear reactors work by fission. The element uranium is the fuel used to undergo the nuclear fission to produce energy to produce energy since it has many favorable properties.