dN = =k,N, dt dN2 ve = k,N, - k,N, dt 21
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After a radioactive decay, the following velocity correlations were obtained. Find N2.


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- Calculate the Q-factor of the following decay process 77 Kr 77 Br + e + ve Enter your answer in MeV to 2 decimal places Answer:Consider the fission reaction n + 235 U After having found the missing nuclide, calculate the Q-value of the reaction. Enter your result in MeV to 1 decimal place ⁰Xe + ? + 2n. 140-A physics professor purchased a 137 Cs source in September 1990, which had an activity of 2.00 x 105 disintegrations per second at that time. What is the activity of that source today? (The half-life of 137 Cs is 30.2 years.) Show your work Upload Choose a File