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The isotope of Curium ²⁴²Cm has a half-life of 160 days and emits alpha particles with an energy 6.1MeV.

What is the power emitted by a sample of ²⁴²Cm with a starting number of N₀ = 10¹⁸ atoms after 80 days?

Select one:

a. 13.8 mW.

b. 34.6 mW.

c. 975 μW.

d. 1.46 mW

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