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a) The radioisotope of lead-214 has a half life of 26.8 minutes. Call 1. Calculate the decay constant of lead-214 in units of s¹¹. Calculate, as a percentage, the number of radioactive nuclei remaining after a period of 100 minutes. iii. At f = 0, a sample of lead-214 contains 2.48 x 10' nuclei. Calculate the number of nuclei that decay in the time interval between t = 60 minutes and f= 100 minutes.

a) The radioisotope of lead-214 has a half life of 26.8 minutes. Call 1. Calculate the decay constant of lead-214 in units of s¹¹. Calculate, as a percentage, the number of radioactive nuclei remaining after a period of 100 minutes. iii. At f = 0, a sample of lead-214 contains 2.48 x 10' nuclei. Calculate the number of nuclei that decay in the time interval between t = 60 minutes and f= 100 minutes.

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a) The radioisotope of lead-214 has a half life of 26.8 minutes. 1. billi iii. At f = 0, a sample of lead-214 contains 2.48 x 10' nuclei. Calculate the number of nuclei that decay in the time interval between * = 60 minutes and f= 100 minutes. TH Calculate the decay constant of lead-214 in units of s¹. 2 A Calculate, as a percentage, the number of radioactive nuclei remaining after a period of 100 minutes. Each decay releases 1.95 x 10¹ J of energy. Calculate the energy released during the time period between f = 60 minutes and != 100 minutes. Briefly describe the process of nuclear fusion. State what is meant by the binding energy of a nucleus. H iii. Calculate the binding energy per nucleon, in MeV, of the isotope Iron 56 which is shown below. Give your answer in MeV. Mass of proton = 1.00728 u Mass of neutron = 1.00867 u 26 Fe
Transcribed Image Text:a) The radioisotope of lead-214 has a half life of 26.8 minutes. 1. billi iii. At f = 0, a sample of lead-214 contains 2.48 x 10' nuclei. Calculate the number of nuclei that decay in the time interval between * = 60 minutes and f= 100 minutes. TH Calculate the decay constant of lead-214 in units of s¹. 2 A Calculate, as a percentage, the number of radioactive nuclei remaining after a period of 100 minutes. Each decay releases 1.95 x 10¹ J of energy. Calculate the energy released during the time period between f = 60 minutes and != 100 minutes. Briefly describe the process of nuclear fusion. State what is meant by the binding energy of a nucleus. H iii. Calculate the binding energy per nucleon, in MeV, of the isotope Iron 56 which is shown below. Give your answer in MeV. Mass of proton = 1.00728 u Mass of neutron = 1.00867 u 26 Fe
Mass of Iron-56 nucleus = 55.9343 u (Use all of these significant figures in your initial calculations)
Transcribed Image Text:Mass of Iron-56 nucleus = 55.9343 u (Use all of these significant figures in your initial calculations)
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