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Which best describes nuclear fusion?
A nucleus spontaneously splits and absorbs energy.
Two nuclei spontaneously combine and absorb energy.
A nucleus collides with a neutron and splits, releasing energy.
Nuclei combine to form a heavier nucleus, releasing energy.
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Nuclei combine to form a heavier nucleus, releasing energy.
(That's nuclear fusion — light nuclei fuse into a heavier nucleus and release energy because the final nucleus has a higher binding energy per nucleon, so mass difference is emitted as energy via E=mc².)
(That's nuclear fusion — light nuclei fuse into a heavier nucleus and release energy because the final nucleus has a higher binding energy per nucleon, so mass difference is emitted as energy via E=mc².)
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