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Answer:
6.23×10^(14) particles
Explanation:
Let the total power be P_0
now according to question
5% ×P_0=30W
so P_0=30/0,05=600 W.
an alpha particle'energy is 5.5 MeV
Let n be number of alpha particles emitted per sec.
Therefore,
n=600J/5.5MeV=600/(5.5×e^6×1.6×e^-19)=6.82×e^14(particles)
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