explain nuclear fission and nuclear fusion why nuclear fusion occurs only at Higher temperature??
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Answer:
In nuclear fusion, two or more small nuclei combine to form a single larger nucleus, a neutron, and a tremendous amount of energy. Nuclear fusion of hydrogen to form helium occurs naturally in the sun and other stars. ... Fusion involves only harmless, plentiful elements but requires extremely high temperatures
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for nuclear fission and nuclear fusion both of this releases energy .
in nuclear fusion two or more light nuclear fuse together to form a heavier nucleus when light nuclei come closer to each other they repel each other due to coulomb force this like look like and fuse together if they have enough kinetic energy to overcome the coulombs repulsive force Hai kinetic energy means high temperature there for nuclear fission occurs at a very high temperature .