problem23_86

University Physics with Modern Physics with Mastering Physics (11th Edition)

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23.86: a) The two daughter nuclei have half the volume of the original uranium nucleus, so their radii are smaller by a factor of the cube root of 2: . m 10 9 . 5 2 m 10 4 . 7 15 3 15 - - × = × = r b) J 10 14 . 4 m 10 17 . 1 C) 10 60 . 1 ( ) 46 ( 2 ) 46 ( 11 14 2 19 2 2 - - - × = × × = = k r e k U Each daughter has half of the potential energy turn into its kinetic energy when far from each other, so: J. 10 07 . 2 2 J) 10 15 . 4 ( 2 11 11 - - × = × = = U K c) If we have 10.0 kg of uranium, then the number of nuclei is:
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Unformatted text preview: nuclei. 10 55 . 2 ) u kg 10 (1.66 u 236 kg . 10 25 27 × = × =-n And each releases energy = × = × × = =-J 10 1.06 J) 10 15 . 4 )( 10 55 . 2 ( : U 15 11 25 nU E TNT. of kilotons 253 d) We could call an atomic bomb an “electric” bomb since the electric potential energy provides the kinetic energy of the particles....
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