Science
Who discovered the rotating magnetic field that is the basis of Alternating Current?
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What type of simple machine is used on a flag and flag pole?
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What kind of electromagnetic radiation arises only from nuclear excitations?
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Which state saw the first self-sustaining nuclear chain reaction in 1942?
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First appearance of light in the eastern sky before sunrise best fits which term?
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After the Centauri system, what is the next farthest star from our sun?
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At which angle should a cannon be aimed to maximize distance?
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