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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why must there be an attractive force to explain the existence of stable nuclei?
there is need for attractive force to overcome the coulomb repulsive
force between protons.
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