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Hipervinculo Física
Definition of a compound machine and examples, the efficiency and mechanical advantage of compound machines.
It is an educational content of CK-12 Foundation (to access some of the CK-12 contents you m ...
Hipervinculo Física
Name these inventions and discoveries of ancient Greece. Includes one Byzantine invention.
It is an educational content by JetPunk, site that contains a wide variety of quizzes.
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