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Neutrinos from Bananas! An average banana has approximately 450 mg of potassium. Naturally occurring potassium consists of three isotopes: (_19^39)K (93.3%), (_19^40)K (0.012%), and (_19^41)K (6.73%). Both (_19^39)K and (_19^41)K are stable, and (_19^40)K undergoes both β^- and β^+ decays with a halflife of1.248×〖10〗^9 yr: (_19^40)K→(_18^40)Ar+(_1^0)e+v(11.2%) (_19^40)K→(_20^40)Ca+(_-1^0)e+v ̅(88.8%) How many neutrinos and antineutrinos are emitted from a typical banana each second?
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Nuclear Physics
The Fission of Uranium-238 Calculate the energy released during the spontaneous fission of uranium-238 into tellurium-134 and zirconium-102.
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Nuclear Physics
Energy Released in the Proton–Proton Cycle Using the Q-values given in the reactions in Equation 34-58, show that approximately, 26.7 MeV of energy is released in the proton–proton cycle of Reaction 34-59.
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Nuclear Physics
Equivalent Dose Find the equivalent dose for a person who has absorbed 10 mGy of α-particles.
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Nuclear Physics
The Equivalent Dose of Polonium Polonium-210 ((_84^210)Po ) α decays to lead-206 ((_82^206)Pb ) and releases 5.307 MeV of energy in the process. The half-life of (_84^210)Po is 138.376 days, and its atomic mass is 209.983 u. What is the equivalent dose received by an average adult lung (mass approximately 5.0 kg) from 10 mg of polonium-210? What is the approximate daily equivalent dose?
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Nuclear Physics
Proton Absorption on Lithium In 1932, English physicist John Cockroft (1897–1967) and Irish physicist Ernest Walton (1903–1995) produced the first nuclear reaction by bombarding lithium with 600 keV protons and producing helium in the following process: (_1^1)H+(_3^7)Li→(_2^4)He+(_2^4)He Determine the Q-value of the reaction.
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Nuclear Physics
A net like membranous complex of superposed flat saccules with vesicles detaching from the extremities seen in electronic microscopy. What is the observed structure? What is its biological function?
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Nuclear Physics
