The Q-value of fission reaction is of the order ___________ a) 10 MeV b) 100 MeV c) 200 MeV d) 500 MeV
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The Q-value of fission reaction is of the order ___________
a) 10 MeV
b) 100 MeV
c) 200 MeV
d) 500 MeV
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- An unstable isotope of cobalt, 60Co, has one more neutron in its nucleus than the stable 59Co and is a beta emitter with a half-life of 5.30 years. This isotope is widely used in medicine. A certain radiation source in a hospital contains 4.20×10−2g of 60Co A) What is the decay constant for that isotope? Express your answer with the appropriate units. B) How many atoms are in the source? C) How many decays occur per second? Express your answer as a number of decays per second. D) What is the activity of the source, in curies? Express your answer in curies.A tumor is exposed to a beam of protons containing 2.6 × 1010 protons. If 25% of the beam energy is absorbed in a tumor of mass 1.25 kg, what is the dose equivalent in the tumor? Each proton has an energy of 52 MeV, and the RBE of this type of radiation is 32. a) 0.043 Sv b) 1.38 Sv c) 4.3 Sv d) 13.8 Sv e) 37 SvIf a reactor produces an average power of 1000 MW for a year, a. How much U-235 is used up assuming 200 MeV are released per fission and the efficiency is 33.3%? b. Also, how much mass is turned into energy?
- It 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 BqGive good explanation Asap ThanksA proposed nuclear reactor facility will have an electrical power output of 937 MW with a 36.9% efficiency in converting nuclear to electrical power. Assuming the average fission reaction produces 156 MeV, how many reactions will take place at the facility every second?
- The half-life of Ra-226 is 1.60 x 10^3 years = 5.05 x 10^10 s Find k What is the activity in curies of a 1.00 g sample? What is the mass in grams of a Ra-226 sample that has an activity of 1.00 x 10^9 atoms/min?A proposed nuclear reactor facility will have an electrical power output of 908 MW with a 31.3% efficiency in converting nuclear to electrical power. Assuming the average fission reaction produces 234 MeV, how many reactions will take place at the facility every second?Both 1)Given a half-life of a radioactive source is 435 years. Calculate the time taken for its activity to reduce from 4.5 Ci to 0.14 Ci? 2) Equation shows nuclear reaction of gamma radiation which incident on an isotope helium. Calculate the energy of the gamma ray in MeV unit? (Given mass of Helium = 3.016029 u, mass of proton = 1.007276 u and mass of neutron = 1.008665 u) 23??+?→211?+01?