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习题练习:Nuclear & Quantum Physics E.4 Nuclear Fission



 作者: admin   总分: 11分  得分: _____________

答题人: 匿名未登录  开始时间: 23年12月14日 16:27  切换到: 整卷模式

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1#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A nuclear reactor converts nuclear energy into electricu5ug0(0wn-jr zqzo3l al energy. Which of the following reactions best describes the primary nuclear reaction in a nuclelu50 rzo n0zgw3q-u(jar reactor?

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2#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Which statement describes a possible n231woe) dmi zwuclear fusion reaction?

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3#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  In the design of a nuclear fission reactor, which of the following statements jr14nb: nn+ox e9th 3iqza 1xw)+mxr+are true+3 o+njzq 14 9n+ xebn:xir1t)xar mhw?
I. Control rods can increase the rate of fission when inserted into the reactor
II. The moderator blocks neutrons to ensure the chain reaction is controlled
III. Enrichment of uranium increases the probability of a chain reaction taking place

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4#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  In a nuclear reactor, what is the name given to the material usedb kdb*d*04-e* v+isb a+hfouv to slow down neutrons in order to cause s-v*4f*be*ddb+ba+vi hk 0 uso uccessful fissions?

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5#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Which of the following isqr5/ 77af qxt,es l4+w )blgzb incorrectly matches a component of a nuclear power plant with its functio7egbxz 7wla+r/5l ,qb 4q )tfsn?

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6#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  1.The following reaction takes place in a nuclear 21rom5 vd;n6kx fvur +reactor:
$^{235}_{92}U$+$^{1}_{0}​n$→$^{144}_{56}​Ba$+$^{89}_{36}Kr$+$3^1_0n$
(1)Differentiate between fission and fusion reactions.
(2)Determine whether this reaction is a nuclear fission or nuclear fusion.
2.The following data is given for this reaction:
The binding energy per nucleon of $^{235}U$ = 7.59 MeV
The binding energy per nucleon of $^{144}Ba$ = 8.27 MeV
The binding energy per nucleon of $^{89}​Kr$ = 8.62 MeV
Calculate the energy released from this reaction. ΔE =    MeV

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7#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  1.Uranium-235 ( $^{235}_{92}​U$) has a nuclear mass of 235.044 u.
(1)State what is meant by mass defect. $δ$ =    $u$
(2)Calculate the mass defect of uranium-235.
2.(1)Calculate the binding energy per nucleon of uranium-235. $binding\,energy\,per\,nucleon$ =    MeV
(2)On the axes given, sketch the variation of the binding energy per nucleon with the nucleon number. Label the position of uranium-235. There is no need to add numbers to the axes.

3.Uranium-235 ($^{235}_{92}U$) decays into thorium-231 ( $^{231}_{90}Th$).
Determine which nuclide has a higher binding energy per nucleon. Use the graph to justify your answer.

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8#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Which of the following is the most suitable method for mana, q;e 9e5c*kfy6ml/ pqoy l0sxging nuclear waste?

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9#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Which of the following correctly shows the change in total binding energy ped7wijf74 edy l:,yig0 r nucleonlf7dj giyew4:y ,di07 in nuclear fission and nuclear fusion?

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10#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A nuclear power plant operating at an overall efficiency of 40% prqnr) h37)d )rkp czhgsujdz4q*b332uoduces energy at a rate of 950 MW. The reaction respon qpqdb 74hg2nzrrkud*))3h s )c 3zj3usible for generating this energy is given by;
$^{235}_{92}U$+$^{1}_{0}​n$→$^{144}_{56}​Ba$+$^{89}_{36}Kr$+$3^1_0n$
The atomic masses of the different nuclides are:
$^{1}_{0}​n$=1.0009u
$^{234}_{92}​U$=235.0444u
$^{141}_{56}​Ba$=140.9144u
$^{92}_{36}​Kr$=91.9262u
1.(1)Show that approximately 190 MeV of energy is released in one fission reaction. At this point the extra significant figures need to be shown since it’s a proof. $≈$    MeV
(2)Demonstrate that the energy density and specific energy of a fuel are related by the following equation $E_D​=ρES$​ , where $ρ$ is the density of the fuel
(3)Using the information given, determine the specific energy of Uranium-235 in $Jkg^{−1}$. $E_s$ =    $\times10^{13}\,J$
(4)Assuming that all of the Uranium 235 undergoes fission, calculate the mass of uranium needed to operate the plant for one year. m =    kg
2.The nuclear reactor consists of several features responsible for the smooth functioning of the reactor. State the function of the following features in the reactor;
(1)The control rods
(2)The moderator
(3)The heat exchanger

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11#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  In a nuclear fission reactiomm5789 dzmu2v vpz;j yg 8yk /tz5x5ycn, a nucleus of element $X$ absorbs a neutron and decays into a nucleus of element $Y$ and a nucleus of element $Z$.
 X+n→Y+Z+2n
Which of the following statements are true about the binding energies are likely true:
I. Binding energy per nucleon of $Y$ is greater than the binding energy per nucleon of $X$.
II. Total binding energy of $Y$ and $Z$ is less than the total binding energy of $X$.
III. Total binding energy of $Y$ and $Z$ is greater than the total binding energy of $X$.
IV. Binding energy per nucleon of $Y$ is less than the binding energy per nucleon of $X$.

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