what do you think you know about physics, physics is the study of matter under the effect of energy, but does this includes solid states bodies, atoms at ground states, object at microscopic size or object moving faster than light? these and more is what prompt me to ask again what is physics?
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a nuclear chain reaction occurs when excess _____ collide with other nuclei.
a nuclear
chain reaction occurs when excess neutrons collide
with other nuclei.
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