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How has the periodic table changed since Mendeleev's time?
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Abird sitting high in a tree is an example of what type of wnergy
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Two carts, one of mass 2m and one of mass m, approach each other with the same speed, v. when the carts collide, they hook together. assume that positive momentum is to the right. which graph best represents the momentum of both carts over time, before and after the collision?
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How has the periodic table changed since Mendeleev's time?...
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