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Author Question: Two people, each of 70 kg mass, are riding in an elevator. One is standing on the floor. The other ... (Read 219 times) |
Did you know?
More than nineteen million Americans carry the factor V gene that causes blood clots, pulmonary embolism, and heart disease.
Did you know?
The familiar sounds of your heart are made by the heart's valves as they open and close.
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Stroke kills people from all ethnic backgrounds, but the people at highest risk for fatal strokes are: black men, black women, Asian men, white men, and white women.
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Cytomegalovirus affects nearly the same amount of newborns every year as Down syndrome.
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The Babylonians wrote numbers in a system that used 60 as the base value rather than the number 10. They did not have a symbol for "zero."