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 of the three types of radiation is the most penetrating and why
alpha is the most penetrating because it has the
highest energy, speed, has no chargeand
least mass.
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