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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 electrical energy. Which ofemq2/f3 szu4a the following reactions best descri u4/32 msaqefzbes the primary nuclear reaction in a nuclear 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 nuclear fut-;n: 4py;rxfq*in rebii (c; sion 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 state l :np+5st drf3cqg83mments are trucqfr:53dp3l stm+ n8g e?
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 useda ysjs6o/r6x.g:p) fh to slow down n op fs:hgy)6.xa6sr/jeutrons in order to cause successful 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 is incorrectly ,2 kk52 ymygme2hqe0 gmatches a component of a nuclear power plant with it2ehggqym,02 ykke5m 2 s function?

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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 ta xuzju,ugy(9ytc9,mpz9.e *ykes place in a nuclear 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 fdj 0qk lgj6yhn.2/8tyor managing 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 ufyi m*1*c lh+total binding energy per nu1 m* +hyficl*ucleon 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 ofh (jx m 9)d3kasv7*tof 40% produces energy at a rate of 950 MW. The reaction responsible for generating th9 3tov s*xdajk(fh7) mis 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 reactio)4p 6aj:xpg nfn, 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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