A radiation oncologist treats cancer with two species of radioactive nuclei, X and Y. The initial number of nuclei for each species (at t = 0) is No. Att = 100 s, the oncologist observes that Nx = 100 Ny. If Tx = 2 Ty, the value of Tx (in s) is: (Recall that t = (1/x) and 1 Ci = 3.7 x 1010 Bq)
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A: Given:- A certain radioactive material decays exponentially. The percent, P, of the material left…
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- In a real or imaginary nucleus of 45X⁹7, (a) how many protons are in the nucleus, (b) how many neutrons are in the nucleus, and (c) how many electrons are in orbit about the nucleus, assuming the atom is electrically neutral? (a) Number (b) Number i (c) Number Units Units UnitsYou are training for an upcoming Physics Olympics competition. Your coach gives you the following problem and a short time interval to solve it: For radioisotopes with very long half-lives, we cannot measure the half-life in the laboratory, because the activity does not change enough in a reasonable time interval to generate a graph like in the figure below. N(1) Nor No N=Noe The time interval T₁/2 is the half-life of the sample. T1/2 271/2 Ⓡ But suppose you have been given a sample of pure 115In that has been gathered from meteoroids. The sample has a mass of 94.1 g and has a measured activity of 24.5 Bq. Quick! Determine an estimate f the half-life of 1151n (in years). Your future as a Physics Olympic team member depends on your answer! угThe reaction shown below has a Q value of 13.574 MeV. H + N - C + He Determine the atomic mass (in u) of the Carbon-12 isotope. (Assume the atomic masses M2 = 2.0141 u, MN-14 = 14.0031 u, and Mued = 4.0026 u. Enter your answer to at least 3 decimal places.)
- Question 12 of 22 Calculate the mass defect of Nitrogen (A = 14, Z = 7). The atomic mass of Nitrogen is 14.00307 u. (Note: The mass of a hydrogen atom is mH = 1.007825 u, and the mass of the neutron is mN = 1.008665 u.) 00 1.21 u 0.53 u 0.25 u 0.11 u zeroIt is known that the initial number of atoms in a radioactive sample is No = 4.0 x 108 atoms. If the the half life of the sample is measured to be 6 days, what is the initial activity R0 of the sample? units in BqAn unknown element X has the following isotopes: ⁶⁴X (49.00% abundant), ⁶⁶X (28.00% abundant), ⁶⁸X (23.00% abundant). What is the average atomic mass in amu of X?