Science

How many years are in a sunspot cycle?

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How many coulombs does one ampere-hour equal?
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What is the main form of energy produced by a laser?
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When cool or cold air suddenly drops to the ground, it is known as a what?
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How many years does it take for Mars to go around the Sun for a complete revolution in its orbit?
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What is the closest value of pi?
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How long does it take for Saturn to rotate completely on its axis (a typical day)?
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Which of these is a scientific definition for the term "matter"?
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Which unit can we use to measure a magnetic field?
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