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.
It canbe released from atoms in two ways: nuclear fusion and nuclear fission.In nuclear fusion, energy is released when atoms are combined or fused together to forma larger atom. This is how the sun produces energy.In nuclear fission, atoms are split apart to form smaller atoms, releasing energy.Nuclearpower plants use nuclear fission to produce electricity. NUCLEAR FUEL-URANIUM The fuel most widely used by nuclear plants for nuclear fission is uranium.nstead,nuclear plants use the heat given off during fission as fuel. Fission takes place inside thereactor of a nuclear power plant. At the center of the reactor is the core, which contains theuranium fuel.The uranium fuel is formed into ceramic pellets.