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 nuclide is formed when 90sr undergoes β decay?
when strontium-90 undergo beta decay
one of its neuron changes to a prpton the atomic number increases by one
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