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习题练习:Physics Unit30: Nuclear Physics and Radioactivity



 作者: physics   总分: 71分  得分: _____________

答题人: 匿名未登录  开始时间: 23年05月01日 14:22  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  
  Which of the atomic partim4o5n4hpz v;ff sa6t; cles has the least mass?

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2#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The mass of an atom isg6 r;6 whg,aaz

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3#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The hydrogen nucleus consistafgbp;96o n8. e .wqah e 7t*wc2.nxays of

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4#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An atom's atomic number is determined by the number ofy8gg xytzo3n84 i5p z tcju4);

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5#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An atom's mass number is determined by the number kh;cvr; z5vx7of

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6#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If an atom's atomic number 8bn2mf,vrlm +) b rx1mis given by Z, its atomic mass by A, and its neutron number by N, which of tnl+8) 2,brmvfm brm1 xhe following is correct?

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7#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When a neutron is emitted from an unstable nucleus, the atomic mass numbersbsu:xb)-5zuf qo 8 1z of the nuclu8b5-1xsbufzz) qo: s eus

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8#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The number of protonsd l k0dc4fy*+ qd.vw-q in an atom is

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9#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  There is a limit to the si, u6:8wn s otypzej.+zt/pq+uze of a stable nucleus because of

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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Atoms with the same atomic number aa zc3j)**l s8oyjg;cbut with different numbers of neutrons are referred tojao3 c*ca*8gzl sj ;y) as

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11#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Isotopes of an element have nuclf og ;-wjjsp) ,xf:2bgei with

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12#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The atomic mass unit is defg70 3ra gwa3yr ks:fd+ined as

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13#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Compared to the masses of its separate protons and neutrons, th):oliib g71hrkw +f:4a y .fbfe total mass of a stable nucleus i .w7:+ykibo 1i)fhar4f fl:bgs always

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14#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When nucleons join to form a stable nu ogxph5 u3o8t,pk;6nq cleus, energy is

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15#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The binding energy of a nucleus is contributed toh1iqmqp(sj3-

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16#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The binding energy per +9lq9imeixx2h; fyzuf,jk))x g2 t f;nucleon is

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17#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The binding energy per nuu:z;-dfha cv )cleon

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18#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Which of the following statements concerninb 9k+z/:0.gq4bqi qgu6kusdzll +bj/g the nuclear force is false?

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19#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Compared to the electrostatic force, the nuclear maw 79ckwpcetx ,1*y /kzss63force between adjacent protons isktwk*pmc x 1 ,96y/caz7 es3wn a nucleus is

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20#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Alpha rays can penetratee3qg8nw k(8 zo

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21#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Beta rays can penetrateazcthi c3,o wd, x:7j4

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22#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Gamma rays can penetratees )f6m lv+( kc0iu/ze

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23#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An a particle is also oqr;c 5k- f.yeknown as

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24#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A $b-$ particle is also known as

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25#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A $b+$ particle is also known as

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26#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A gamma ray is also iorym yh un e18fxpn)+xa 81fxg8)60oknown as

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27#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An alpha particle will kg(nkv mep3a 6ygf3 bd53l(e0 be attracted to a

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28#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Alpha particles have an atomic mass eq1lvly , ykm f.)9t*kkfual to

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29#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When an alpha particle is emitted from an unstable jd. q iqvj bv(ss/9;2cnucleus, the atomic mass number of the nusd /2qc; ibjsv(9qv. jcleus

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30#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When an alpha particle is emitted from an unstable nucleus, the atomicka (w zjc1xit6)v0cb- number of the nucleu(z-j0t vk cca bwxi1)6s

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31#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The expression (MX - MY - Ma) x 931.5 q-nxuvxor4m.b f:s;ib2 vgy0 ;c.wj7represents

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32#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  In beta decay

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33#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  During $b+$ decay

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34#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  During $b-$ decay

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35#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When a $b+$ particle is emitted from an unstable nucleus, the atomic number of the nucleus

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36#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When a $b-$ particle is emitted from an unstable nucleus, the atomic number of the nucleus

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37#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When a $b-$ particle is emitted from an unstable nucleus, the atomic mass number of the nucleus

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38#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Which of the following is most neaswqxmc .;d*o1up8 8gwrly the same as a gamma ray?

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39#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When a gamma ray is emitted fromn l7ng)rhxq086qt l8;g0myox an unstable nucleus,

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40#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Which particle has the most hkm2d.a-m pp)5d3g rcbxt; spj:tf 99mass?

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41#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  In all three types of radioactive decay, what value is conserved in additionai/nap 2 l(gy(y ;.20mjtyni i to electric charge, energy iin0 amp;./jyna(gtyi2y 2(l , and momentum?

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42#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What happens to the half-lif8k8w7hez tdfz(y.z-*zptrf 9e of a radioactive substance as it decays?

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43#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  In radioactive dating, carbo6j z2(vcumphz 0tl zl;c1q8y7w di./ vn-14 is often used. This nucleus emits a single beta particley ql/v0mu jl.1;tzc7d(86 zv z2chpi w when it decays. When this happens, the resulting nucleus is

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44#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The type of detector that uses a magnetic field to curve charged partb7 wumkj/u0m gndvg2d 34 vpfa (t13z:icles is a

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45#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The type of detector that ulh* t xgr*eh-b3( /fxy/ck1 swv4 q-sfses liquid hydrogen is a

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46#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Cloud chambers have been replaced by bubble chambers,h1v0jwp4rkigo 3* tw because

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47#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An element with atomic mass number of 14 and atomic fe1 myp.w5f.8pluh ,m number 6 has how many proton,hy.mf1.lpmw85 p eu fs?

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48#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An element with atomic mass num/ak /hu*53 ex i8fcb qu1idl)rber of 14 and atomic number 6 has how many neutronue 3l1u/5i *b /d8hicak qf)xrs?

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49#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The atomic number and mass number for calcium 39 are 20 and e247owfx .woy0 dnzn: 39, respectively. How many nuclo.2nw d yox4z7:0fewneons are in one atom?

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50#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The atomic number and mass number for calcium 39 are 20 s +60nh0szb02i swjxcu) nrc 5and 39, respectively. Ho05ns0w sb2sui0) hc+6znjc rx w many electrons are in one atom?

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51#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The atomic number and mass n+yh- qdyf4i*x nb )aa0d 2xif1umber for calcium 39 are 20 and 39, respectively. How many protons are i ay2ni) +i ddxqafb4 f*0y1-hxn one atom?

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52#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The atomic number and mass number for calcium 39 are 20 and 39, resp4x,-9qjsbo,mka :y v sectively. How many neutrono9s:sv j,y-bq ,mk4xas are in one atom?

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53#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  In a 93 Nb nucleus, the fkwys hj85ckt8z49 fz,,n pm/number of protons, neutrons, and electrons is 41

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54#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  How many protons are there irbc4ocpqp*man)) . ay oo9- 1sn the carbon-14 nucleus?

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55#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If an element of atomic number 15 has an isotope of mas 2y ,hbgv*ak4;7 wqyw g;sk:dqs number 32,

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56#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Calculate the binding energy1v oc9xx2iqr: of $^4He$.

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57#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  How much energy is required to remove one protnz y)y y2j(h,+zrt2r zon from $^9Be$?

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58#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An element with atomic number 88 goes through alpha decay. I(rl4zrb;:n yca k;l4 yts atomic number is b (l4zcyr4:yka lr;; nnow

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59#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An atom has 98 protons a1a)hg q8 4jh4vpplmn1 nd 249 nucleons. If it undergoes alpha decay, what are the number of protons and neutrons, respe4m18h 4qgpvj1)p alnhctively, in the daughter nucleus?

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60#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A carbon-14 nucleus decays to a nitrogen-14 nuclebm05t4k 76zb7/vts5ikdh d sius by beta decay. How much energy (in MeV) is released if car 7s/ m546bib7di dhstv05t kzkbon-14 has a mass of 14.003242 u and nitrogen-14 has a mass of 14.003074 u?

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61#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An element with atomic z2fyftx.qo;9l 5uzg:syrnd o dz *.-0number 6 undergoes $b-$ decay. Its atomic number is now

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62#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If the half-life of a material is 45 years, how much will be left after 10 *y ietpfl b6j9607dkv0 years?pl76d j*vk6t09 b yfei

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63#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If $4.0 \times 10^{18} \; atoms$ decay with a half-life of 2.3 years, how many are remaining after 3.7 years?

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64#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the probability that an atom wq-wi(qjntv( * qti *2hill decay this year if its half-life is 247 yearsq hnvt*qqi t-iw(*2j (?

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65#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A Thallium source was certified at d q4q*gu3 ;eju.c7bbw$10 \; \mu Ci$ ten years ago. What is its activity now if the half-life is 3.7 years?

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66#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A radioactive sample has a half-life of 10 min. What fraction of the sample ie.l)j+chzi ,,o0l:ia x +ceaw: yo4 tvs left ola :evothl + ,: aieiw4cyc)z+,j .x0after 40 min?

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67#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The half-life of radiol .zj0km mj48 jbhh4b*6o/uc eactive iodine-137 is 8.0 days. How many iodine nuclei are necessary to produce anbo bh*e /.8lmjh j6u 4cjzm40k activity of $1.0 \; \mu Ci$?

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68#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A radioactive substance with a half-life of 3.0 days has nnsw ugd9*;+.po3z,bp rds+ury; c/p an initial activity of n,.*r+dnus; ys o +3pb g z9/cup;rdpw$0.24 \; Ci$. What is its activity after 6.0 days?

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69#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The radioactivity due to carbon-14 measurek +ro4nra,or a+q57hwd in a piece of a wooden casket from an ancieorokr,+a n war7 5+4qhnt burial site was found to produce 20 counts per minute from a given sample, whereas the same amount of carbon from a piece of living wood produced 160 counts per minute. The half-life of carbon-14, a beta emitter, is 5730 years. Thus we would estimate the age of the artifact to be about

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70#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  How long would it taqb7qv)a/ dibv 7r.fa 5+rp r5mke $4.0 \times 10^{20} \; atoms$ to decay to $1.0 \times 10^{19} \; atoms$ if their half-life was 14.7 years?

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71#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  How long will it takhgf him3ygt+1g)8rq f ge4r35e a $4.5 \; Ci$ sample of material to reach an activity level of $0.14 \; Ci$ if the half-life is 435 years?

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