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← ScienceWhich outcome results when high-speed spacecraft propulsion relies on equivalent mass-energy conversion?
A)Increased radiation exposure for occupants✓
B)Complete conversion becomes theoretically impossible
C)Propellant mass and delta-v are decoupled
D)Fuel efficiency decreases non-monotonically
💡 Explanation
Increased radiation exposure results because mass-energy 'equivalence' converts propellant into energy. Thrust is achieved via particle emission; this inherently creates high-energy radiation. Therefore, radiation increases, rather than conversion failing or direct fuel change at relativistic velocities.
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