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Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	Since angular momentum is a vector, which for each orbit points perpendicular to the plane of the orbit, these vectors must be added together to get the total angular momentum.
http://www.w3.org/ns/prov#wasQuotedFrom	physorg.com