Science

In math, "pi" is equal to?

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Which one of the original 7 astronauts sported the middle name of Herschel?
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Which is the approximate angle at which the Earth inclines?
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What kind of electromagnetic radiation arises only from nuclear excitations?
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The definition of "a physical unit of storage on a computer disk or tape" best fits which science term?
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The obscuring from sight of one celestial body by another is also by what scientific term?
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Which of these measurements would be different on Mars than on Earth?
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What are materials that come from the earth called?
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Energy return of a radar signal after it has hit the target best fits which science term?
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