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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which naturally occurring radioactive particles are negatively charged?
beta
particle is negatively charged, it a stream of high speed electrons with mass
of zero and charge of -1.
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