Find which of the ∝ and β decays are allowed for 22789Ac
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Find which of the ∝ and β decays are allowed for 22789Ac
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- The ceramic glaze on a red-orange Fiestaware plate is U2O3 and contains 50.5 grams of 238U, but very little 235U. (a) What is the activity of the plate (in Ci)? Ci (b) Calculate the total energy (in J) that will be released by the 238U decay. J (c) If energy is worth 12.5 cents per kW · h, what is the monetary value (in dollars) of the energy emitted? (These plates went out of production some 30 years ago, but are still available as collectibles.) $99Mo beta decays with a half-life of 66 h to 99Tc*, an isotope that is widely used in medical imaging. The 99Mo itself is created in a nuclear reactor by bombarding 235U nuclei with neutrons. One particular 99Mo was created in this way 66 h ago, while another was created just now. Which nucleus is morelikely to decay in the next 66 h?A π0 of kinetic energy 720 MeV decays in flight into two γ rays of equal energies. Determine the angles of the γ rays from the incident π0 direction.
- If a sample of radioactive material undergoes 9.3092E12 decay events in 34 seconds, how many Curies are contained in the sample?2H is a loosely bound isotope of hydrogen, called deuterium or heavy hydrogen. It is stable but relatively rare — it form only 0.015% of natural hydrogen. Note that deuterium has Z = N, which should tend to make it more tightly bound, but both are odd numbers. Calculate BE/A, the binding energy per nucleon, for 2H in megaelecton volts per nucleon.The decay constant for 198Au is 2.97 x 10-6 s-1. Calculate the half life.