45107cbe_s___Physics___Particle_Physics__Answer
[Date Answered] May 24, 1999 [Questioner (age, location)] Steve [Question] What is hypercharge? [Answer] 
The hypercharge of a subatomic particle is the sum of its baryon number and its strangeness. Strangeness and the baryon number are properties of subatomic particles. Since strangeness and baryon number are conserved, the hypercharge is conserved as well.
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