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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 partimzxp; -7aa n6mcles 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 isbx- ,z a,z etuvd e520aksxjl*czz 079

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3#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The hydrogen nucleus consi bzm/f+f1v 6t);lly lcsts 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 detkkb6ppumr.xmn:((*n; aard 4 ermined by the number of

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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 w3rhw2 3ats ;,xcdk8d gr18kvis determined by the number of

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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 is given by Z, its atomic mass by A, s :-v58(gvsnlf,csvt and its neutron number by N,sc5vlt(f -vsv: gn8s, which of the 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 unstablkos z- -dm.ro)t;qs0 be nucleus, the atomic mass number of the nuclt;.0ozmdsr -oqkb-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 protons in auc0fz s2cgr8 7n 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 size of a st9m)o*8wplgq a able 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 numkg3h + lyf:gzlozw ar/7;dv *w+h5)6dvuo 4paber but with different numbers of neutrons are referredh dhd7:p5o3k+ vlwor*wy/ zga;a6zf+)4 lg u v to 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 nuclei 5+ 3smnwly j6yv-vu,dwith

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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 defilur*b( ,dvs.tx 9bo3hy kv3i6ned 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, the total mri)d nv lt108kass of a stable nucleus vt80)lkidrn 1 is 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 formdv .in;n a(yu7b .p+jwrlo+v iz1zw7+ a stable nucleus, 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 nzej (qja 4/m5u,; 2iq7khsjzeucleus is contributed to

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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 7jcp +xe /ig)xy6p*wt 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, .,3h zj sffvfd;mt9,6oflzc nucleon

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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 concerning the nuclear fj ,gv*li *4 ez6e)g, /tukcselorce 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 forua 9z(z +r0thtce between adjacent protons in a nucleusta th9 (z0+zru 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 penetr5t w5 *qx1zt;s5fhc .krtol/bate

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21#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Beta rays can penetratmooid3 u :;usa5nvy,8 e

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22#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Gamma rays can penetrateu,ozj bf;s 1p;g h*lk5

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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 kno ;0 y8rm (h k0hm0,v ejqr3vbe9z3zjcbwn 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 kg 4,:s6vj y ;rph(kwwonown 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 be wentr9z2.qk1 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 equal a; z g8xeilb (*5m uv4t:yno1dto

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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 emittz :0br kfj5nn0os4717pwev ln ed from an unstable nucleus, the atomic mass number of the nucl lp45 s f:nnwn7r0z0o1ebj 7vkeus

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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 unstag6 szpas86(m39uygec ble nucleus, the atomic number of the nucleus(s6gs 9 8e6cygup3 amz

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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 - Mawyk b(gxpj0ae62o, q/) x 931.5 represents

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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 nearl yh(ay+gkml (kj:33n ey 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 from an unstable nucleus,h h2kw;nm h:tkrn+,v*b3rz3t

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40#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Which particle has thehpznqwl+z83m k( n, 2i most mass?

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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 decaq*w/ p)byas18dpp u3h dvx e:8y, what value is conserved in addition to electric charge, energy, and/qu8b1p*xd s)e 8h3ypp v da:w 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-life of a radioamg tit33 8o3ono1yjdqk/ 1j2 cctive 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, carbon-14 is often used. This nucleus emits a singlec0nk7uh/td y 6,(zpt p beta particle when it decays. When this happens, the resulting npt 70t6 dy/knzu(h pc,ucleus 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 u ij4pe c28q n)2 jmpev;*xslf)pz5mz:ses a magnetic field to curve charged particles 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 uses liquid hydrogen is ayd 56 (u1m zxz4fj0npw

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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 bubbl3y9b qqtvnrla-, + ypk5g946za/oqlg e chambers 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 number 6 has how many j5w- h0 gtqf6sprotons- g 5fqjwt60sh?

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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 number of 14 and atomic tjnmn8vr rtq. e0 adc5.), l)bnumber 6 has how many neutrons?cre8,5))ln ..b0 rt tdmnqvja

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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 ul:qwjku;: yxhg8 7u2calcium 39 are 20 and 39, respectively. How many nucleons::8;xwl qyg 2u7 hujuk 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 numb f6h xxajs1f+;er for calcium 39 are 20 and 39, respectively. How many electrj6x1;+a xfsf hons 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 number for calcium 39 are 20 a2 8l es ;pnombrcy86.i8z)qbhnd 39, respectively. How many protn2q re8y zcb; 8h) mpsb6.oil8ons are in 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, respec41dcvl,;/z g 1lns iupg1th(ctively. How many neutrons are in one atom?d z g/h1llci nsp1g4c(,1 tv;u

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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 n9q.q oeoc.p3k r zumaejp) )o 6/;au5dumber 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 in the cd3g9oa:a5iny 4ic , vcarbon-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 atog8mon)jo*9 zt 1h.h iymic number 15 has an isotope of mass 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 energy ocqg1fu lr1 /fy s972haf $^4He$.

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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 re)/k6ylkb :ou ub9ugw) quired to remove one proton 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 a-zlv t 0mqm7p9n.o*uhm :u t c*s;ha0elpha decay. Its atomic number is*;9m *npt.tvlzq0u 0hu mh se7:c-om a now

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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 and 249 nucleons. If it undergoes alpha decay, what are 9d o7tv,y6wvuthe number of protontv, o6y7duvw9 s and neutrons, respectively, 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 nucluq1c4b, wp*nk m6:dlz-hwlr-ob)dn( eus by beta decay. How much energy (in MeV m--h,p c w*n(oq)bdb1ldluk w6r4n: z) is released if carbon-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 number 6 undew5tbq4pcf17/i l tt 8oou7q* urgoes $b-$ 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 45iqgp*jthh )g)3-m0ss years, how much will be left after 100 year3pm tj)- *g qhhissg0)s?

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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 will decay this h-a)1wmh 0r(nvn.jznyear if its half-life is 247 ya-z )h(10m hnnwrjv .nears?

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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 cetg-pzb )hyo*a)9x0tu rtified at $10 \; \mu Ci$ 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 samplej6fz0,ap pzap+4k3u jp *ihf+ is pfz+u zaj+ijpp,k4p60a*h3 f left after 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 rad:u7hvj kvo(m.7i8 yz uioactive iodine-137 is 8.0 days. How many iodine nuclei are necessary to produce an activity ofmou 7.z(ivu:yvk87j h $1.0 \; \mu Ci$?

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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 an initial activ nm,1 ir,me3q+g.x ay/zvr3orr7 jj1nity of ryjmz g/mn,o, +v 7nrx33a1ieq1jr r .$0.24 \; Ci$. 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 carbonlw(s)xpju7. z -14 measured in a piece of a wooden casket from an ancient burial site was found to produce 20 counts per minute from a given sample, whereas the same amount of carbon ul ( wp7j).zsxfrom 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 takev90+t5d ivion, 3.gfgw c* smz $4.0 \times 10^{20} \; atoms$ 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 take a 30 z8b9y95ir: tf0ux6iajuz rbpyor1$4.5 \; Ci$ sample of material to reach an activity level of $0.14 \; Ci$ if the half-life is 435 years?

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