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What is an example of the conservation of angular momentum?
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Q14: Spicules can trigger communications blackouts and auroras
Q22: Why have so many optical telescopes been
Q22: Variables of a certain type are called
Q25: A comet near the Sun whose orbit
Q42: Kinetic energy refers to the energy of
Q62: The type of elements present in a
Q63: Which is the longest surviving, and most
Q64: One reason it has proven difficult for
Q85: Demand for drugs by wealthy urban residents