Sin(45) = 1/√2
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The answer for this is "All of above"
Obama?????? i realy dont now
Everything has mass. The mass of something never changes.
Mass is measured using grams.
Air is not that heavy, but it certainly has mass because it takes up space.
For every one liter of air, their is 1.19 grams.
Because bacteria replicates so quickly we use it for our own purposes