Science
What was the name of the first artificial satellite launched into space?
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What spacecraft takes astronauts into space, orbits the Earth and can be flown more than once?
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Which of the following factors does not affect the resistance of a conductor?
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Awarded the Nobel Prize in 1977, John H. Van Vleck's area of expertise is in what?
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What trees located in California are the tallest trees in the world?
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What is the name of an instrument that records vibrations in the Earth's crust?
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What is the maximum indirect fire range of a Browning M2 .50 caliber machine gun?
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What does a reflecting telescope use to bend light?
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About how long does it take for sunlight to reach the Earth from the Sun?
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