Introduction To Health Physics
5th Edition
ISBN: 9780071835275
Author: Johnson, Thomas E. (thomas Edward), Cember, Herman.
Publisher: Mcgraw-hill Education,
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Chapter 8, Problem 8.9P
(a)
To determine
The terminal velocity of spherical particles of
(b)
To determine
The terminal velocity of spherical particles of
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- (a) Show that if you assume the average nucleus is spherical with a radius r = r0A1 / 3 , and with a mass of A u, then its density is independent of A .(b) Calculate that density in u/fm3 and kg/m3 ,for 56 Fe .arrow_forwardTwo radioactive waste products from nuclear reactors are strontium Sr (T12 = 29.1yr) and cesium Cs (712 = 2.06yr). These two species are present initially in a ratio No, sr/Nocs-7.80 x 103. What is the ratio Nsr/Ncs 17 years later? Nu -Number i No Unitsarrow_forward29 SSM The uranium ore mined today contains only 0.72% of fissionable 235U, too little to make reactor fuel for thermal-neutron fission. For this reason, the mined ore must be enriched with 235U. Both 23U (Tu2 = 7.0 x 10° y) and 238U (T12 = 4.5 x 10° y) are ra- dioactive. How far back in time would natural uranium ore have been a practical reactor fuel, with a 23$U/23$U ratio of 3.0%?arrow_forward
- An a grain with a kinetic energy of 5 MeV approaches an Au (gold) nucleus with the sighting parameter equal to the radius of the Au nucleus. a. Find the maximum approach distance of the a particle to the nucleus in these conditions. (Za=2, ZAu=79 and rAu=7 fm) b. How close can the alpha particle get to the gold core? c. Únder what conditions can this approach take place (Assume the target core does not rebound)arrow_forwardRadioactive element AA can decay to either element BB or element CC.The decay depends on chance, but the ratio of the resulting number of BB atoms to the resulting number of CC atoms is always 2/1.The decay has a half-life of 8.00 days.We start with a sample of pure AA. How long must we wait until the number of CC atoms is 1.50 times the number of AAatoms?arrow_forwardQuestion 12 of 22 Calculate the mass defect of Nitrogen (A = 14, Z = 7). The atomic mass of Nitrogen is 14.00307 u. (Note: The mass of a hydrogen atom is mH = 1.007825 u, and the mass of the neutron is mN = 1.008665 u.) 00 1.21 u 0.53 u 0.25 u 0.11 u zeroarrow_forward
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