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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what is the mass of an alpha particle
an alpha particle is helium nuclei it has a mass
of 2 protons and 2 neutron, it mass is 4.0012 amu
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