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The top documents tagged [energy radiation mass]
Clicker Question: Earth’s average density is about the same as: A: water B: an iron meteorite C: balsa wood D: a chunk of volcanic rock
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The Sun The Sun in X-rays over several years The Sun is a star: a shining ball of gas powered by nuclear fusion. Luminosity of Sun = 4 x 10 33 erg/s =
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