Nucleus: Practice Problem & Solution

Solution Explained:

To solve this problem, we apply the core principles of Nucleus. Understanding the underlying formula is key to arriving at the correct answer below:

Power $P = 5 W = 5 J/s$. Energy per fission $E = 200 MeV = 200 \times 10^6 \times 1.6 \times 10^{-19} J = 3.2 \times 10^{-11} J$. The fission rate is $n = P/E = 5 / (3.2 \times 10^{-11}) = 1.56 \times 10^{11} s^{-1}$.