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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tina and her puppy are tugging on a rope, each pulling on opposite ends. when is tina doing work?
tina on do a work when she pull her dad from the starting point.
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