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Some satellites use nuclear power. (a) If such a satellite emits a 1.00-W flux of ?...

Some satellites use nuclear power. (a) If such a satellite emits a 1.00-W flux of ? γ rays having an average energy of 0.500 MeV, how many are emitted per second? (b) These ? γ rays affect other satellites. How far away must another satellite be to only receive one ? γ ray per second per square meter?

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