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the two-coil DC generator can be used to archieve a more stable emf, but can the same technique be used in AC generator as well? i am lost.:confused:

hi i've got some qns that are confusing me:confused: 1. there was once a proposal to launch satelites directly into a circular orbit that's a constant distance from the earth, using a giant world war 1 cannon. assuming that the cannon could give the satelite a high enough velocity, explain...