(a) Calculate the energy released in the beta decay of P. (b) If a beta particle has 650 keV, how much energy does the antineutrino have? Q4.

The decay constant for 198Au is 2.97 x 10-6 s-1. Suppose we had a 1.00-ug sample of 198Au. What is its activity?

A 14 g ovarian tumor is treated using a sodium phosphate solution in which the phosphorusare the radioactive 32P isotope with a half life of 14.3 days and which decays via beta emissionwith an energy of 1.71MeV. Half of the sodium phosphate solution is absorbed by the tumor anddeposits 9.00 J of energy into it. The other half of the solution is dispersed throughout the patientstissues, also depositing 9 J of energy into the 50.0 kg of body tissues. (a) What is the dose (in Gy andrem) that the tumor receives? (b) What is the dose (in Gy and rem) that the rest of the patient receives?

A radioactive sample of an isotope with a half-life of 24 hours has an activity of 3×10^5 Bq when delivered to a physics lab. What is the activity of this isotope exactly 14 hours later when it is to be used in an experiment?

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?

A nucleus of 238 Np captures a thermal neutron to form a nucleus of 23⁹Np. What is the excitation energy (to 1 dp) in MeV for this process?

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Neutron probes are used in agronomy to measure the moisture content of soil. A pellet of 241 Am emits alpha particles that cause a beryllium disk to emit neutrons. These neutrons move out into the soil where they are reflected back into the probe by the hydrogen nuclei in water. The neutron count is thus indicative of the moisture content near the probe. What is the energy of the alpha particle emitted by the 241^Am? Answer in megaelectron volts

Consider the fission reaction 141 n + U -> 235, 92U syXe + 92 38Sr +3n The masses of the components are 235 235.04393 세 xe| 140.여 2678 92 5 91.911 038 n 1.00 866 U Find the energy released in MeV Use the editor to format your answer

66/28Ni (mass = 65.929 1 u) undergoes beta decay to 56/29 (mass = 65.928 9 u). (a) Write the complete decay formula for this process. (b) Find the maximum kinetic energy of the emerging electrons.