1236_Physics ProblemsTechnical Physics

1236_Physics ProblemsTechnical Physics - Chapter 44 P44.22...

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Chapter 44 577 P44.22 (a) The first term overstates the importance of volume and the second term subtracts this overstatement. (b) For spherical volume 43 4 3 3 2 bg π R R R = . For cubical volume R R R 3 2 6 6 = . The maximum binding energy or lowest state of energy is achieved by building “nearly” spherical nuclei. P44.23 (a) “Volume” term: EC A 11 15 7 56 879 == = . MeV MeV af a f . “Surface” term: A 22 23 17 8 56 260 =− MeV a fa f . “Coulomb” term: ZZ A 33 13 1 071 26 25 56 121 . MeV MeV . “Asymmetry” term: AZ A 44 2 23 6 56 52 56 674 = a f a f .. MeV MeV. E b = 491 MeV (b) E E b 1 179% = ; E E b 2 53 0% ., E E b 3 24 6% .; E E b 4 137% . Section 44.4 Radioactivity P44.24 RR e e e t = = F H G I K J = 0 2 8 04 40 2 2 5 5 640 1 2 0200 λ . . ln . . ln mCi mCi mCi mCi d d ej P44.25 dN dt N so F H G I K J ×= × −− 1 1 00 10 6 00 10 6 00 10 15 11 4 1 N dN dt . e j s T 12 3 2 116 10 193 × = ln s m i n a f P44.26 RN F H G I K J F H G I K J × ln . . . 2 527 100 602 10 23 yr g 59.93 g mol R × F H G I K J 132 10 1 418 10 21 13 decays yr
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This note was uploaded on 12/15/2011 for the course PHY 203 taught by Professor Staff during the Fall '11 term at Indiana State University .

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