problem43_33

problem43_33 - 43.33: a) 0.693 T1 2 0.693 (4.47 10 y)(3.156...

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43.33: a) . s 10 91 . 4 ) y s 10 156 . 3 ( ) y 10 47 . 4 ( 693 . 0 693 . 0 λ 1 18 7 9 2 1 - - × = × × = = T b) decays/s. 10 44 . 4 Ci s decays 10 70 . 3 ) Ci 10 20 . 1 ( Ci 10 20 . 1 5 10 5 5 × = × × = × - - . s 10 91 . 4 s decays 10 44 . 4 1 But 1 18 5 - - × × = = = dt dN N N dt dN λ N m N u) 238 ( nuclei 10 04 . 9 22 = × = kg. 0357 . 0 ) 10 kg)(9.04 10 66 . 1 )( 238 ( 22 27 = × × = - m c) Each decay emits one alpha particle. In 60.0 g of uranium there are
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This note was uploaded on 05/12/2008 for the course PHYS 262 taught by Professor Dougherty during the Spring '08 term at Lafayette.

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