The New Horizons spacecraft, launched in 2006, spent 9.5 yr on its journey to Pluto. The spacecraft. generates electric power from the heat produced by the decay of 238 Pu, which has a half-life of 88 yr. Each decay emits an alpha particle with an energy of 5.6 MeV. New Horizons was launched with 1 10 kg of plutonium. â–¼ Part B How much thermal power was generated by the plutonium when the spacecraft reached Pluto? Express your answer with the appropriate units. HA Q Pas- Value Units
