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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in alpha decay, what happen the mass number of the atom before the decay
the mass decreases by four , for example
what nuclide is formed when 211po undergoes α decay?
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