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Which of these particles was discovered first?
Science
Which of these particles was discovered first?
Electron
Neutron
Proton
Muon
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A ramp is an example of which of these simple machines?
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What trees located in California are the tallest trees in the world?
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Which electronic component can be classified as NPN or PNP?
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Which abbreviation refers to a term that literally means "below red"?
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Which planet does the moon Deimos belong to?
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The Hubble Space Telescope was deployed on which Space Shuttle in 1990?
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Which 5" telescope would have an optical tube with the shortest length?
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Which planet has a great red spot that is probably a large storm?
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