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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pablo prepares to lift a barbell. during which stage of the lift does pablo do work on the barbell?
a) after he drop the barbell b) before lifting the barbell c) before dropping the barbell d) all of the above
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