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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 particles has the .avloiddslv8+ 3-v/ 0usgl m/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 4obx qze +yi;2is

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3#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The hydrogen nucleus 7- akcx1g w;uk+casceer+5j-zn (( yk consists 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 t*rsyj / kq 2jhantaq n083,6pthe 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 is determined byb4h szvb 32z7e0 )xo7lklwn i1 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, and its neutrone7ae9p-z*egn,--lu g ott xw ix::rg. number by N, wh7ue-* rzx g-:9-teg :ot,ipg a l.wxenich 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 unsc0jojo l g(,j(table nucleus, the atomic mass number of the nuc(0o jj cl,oj(gleus

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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 an ,h ;v)quh:s-rrrx4ouatom 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 stable nucleus because of7m4ickxw3 o:h zbv8:i

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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 but with different numbers of neutrons are refnlxrd1niwg9s6+iarhyb 3jk:x69 - 5 zerred tzrxs6+ nd:x r1y9awijl- 539b6ghniko 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 nuclei10xla exg,6v t+dqej 0 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 d))o3+wwna j*x:6p u 2k l45j joztunjrefined 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 eihyn 01*91 miaba,(bx- xs4ov p. lcbprotons and neutrons, the total mass of a stable nucleus is a xice9ysho01nilp b -mb 1, *axva4b.(lways

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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:.tu:9bff.es n 1wkhn2m;*6mrddxi4 fb nh ;c 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 nucleus is contribr6g::(2lywb4py aei tn.vt d3uted 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 nucleon iwggg6m gbu- 1p7( lrk*s

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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 nucleon b(oi cue5p j2/4i rhh:e.tlz/

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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 concerniuku)gsc2q0 vd7 c m9s1p bp7*yng 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 num3-i+:u3 nlxlhev4q eclear force between adjacent protons in a nuchl4vl3:e3uinx e -+mq leus 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 penetratp b,8hq nrey8*e

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21#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Beta rays can penetr p+c/s0u v.q*jynabx ;ate

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22#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Gamma rays can penetrate3t0)r3-mx t(s+beydee z3 io c

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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 kno4; v 8q-jqqryv5 :i/cbqn3zegwn 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 known 0elle 7el ,vb8as

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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 att,kodk67 sp,lfxk 7s2 tracted 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 eqrdtd;vaw oq,+er,an3as:3 bx5iu. 1tual 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 nucleus, the atomic ma pke)7 iq1fl)x. c j6fxd7b(njss number of the nucleus6.7fq1jb xxlfcn( jp )i7d ek)

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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 sc0 dsqbr4, p1vc+ m,qd4z1oz emitted from an unstable nucleus, the atomic number of th v br1z4sm1qdqo dcz+0c,,4 pse nucleus

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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 re 5 j.5zga qwg9by un/r8rg60jrpresents

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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 u y - yn;uqg8yhvh7*e2nearly 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 nucleydcq +7ojri4 4us,

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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 masapny m95h25 yhs?

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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 isam 9 (sgh6ye,xn0zs szu9lc:, conserved in addition to electric charge, energy, and momenxeacy0: hlu9(n6m, s9zz,s sgtum?

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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 radioactive syp,f uwpz 9/5rubstance 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 emit bn2 nt4ed-*j1/whuoym9 g3p*ts te s+s a single beta particle when it decays. When this happens, the ruhg tw* y /nde*bt9 -pms1et4+j o2ns3esulting 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 mag 05kgnd6bll33a. jegj netic 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 thatpwnli4/efh dia7,.b 5 uses 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 *ulaf2k.+ w)lgtp,c ebecause

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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 howrqqza;,at 9ufgs*8y l1l 70ye many protons?y*qqt1 azrg y,ae89;ulf ls0 7

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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,hk7* ;ipnrp z mass number of 14 and atomic number 6 has how many neutro pi;hn,pz*7r kns?

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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 numberj2s dh)(9lomuxp k* )v9ck :in for calcium 39 are 20 and 39, respectively. How many nucleonol9svcudji))(9kk:x ph *n2 ms 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 and 39, respectively. H1qnl)ob lqpms 6qx0x: 4 e2jy5ow many electrons are inq:q p520jb1 mo)qlxl4 xnesy6 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 annw, o5n:ix9q1ydg;( /wkuxb sd 39, respectively. How mawnu1;/: xx( 9 gos,wi5yqkn bdny protons 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 ,0en .i gegv4:rlx peq k;)+tkand 39, respectively. How many ngrk ;n:0qx)e.e, tlk e+ivgp4eutrons 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 number of protons, neutrons, and elecdoiwq2 40uw8c,dp pm92nj mu,trons 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 carbon-14 nuclezj0 crvb1b03a us?

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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 zg7-r g.hwdh 8 8mjan*d;5ewlan 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 nqrrdnq8 g mq.qy44i* wpae3jd-a0;*energy 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 removeqe26xa x6*efz 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-)g abboejyzx9 a*1 /s,ktjj3 alpha decay. Its atomic number is nog xzae jya,k9 -j/to13 *b)sjbw

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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 a7sh4.mlo0ithm9 p+ g x *u3kbcre the number of protc.+43g xbp*siot7h m0 uk 9mlhons 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 nucleus by beta decay. How), rswd(zr ,fd much energy (in MeV) is sr f)d(,d, rzwreleased 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 un:f0p4g+,hqh1 h w0eglmqog vme (m9h6dergoes $b-$ 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 af) ao+.gj) cyrlter 100 year c.)+ra oy)jgls?

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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 year if its h11rzwj)m oy-ynuk u5 gm+ -ec7alf-life is 247 yearz-uc7+m1o r 1num jke5)-wgyys?

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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 certifkaza o g1.+wy jyv1b -dcn y6sw)8 xxg/,m6k;fied 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 h ,1rohq*; ipfozu5; c9xu/gwg/ol) kof 10 min. What fraction of the sample is l pou 1,xi fkhrc*zg;og lqh//);u9 o5weft 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 radioactive iodine-1078yta tl;daf37 is 8.0 days. How many iodine nuclei are necessary to produce an act;t yf7d0a 8lativity 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 f rw 8dde-k:wy;)eel4with a half-life of 3.0 days has an initial activity of 4 e f;wyker led)d8-:w$0.24 \; Ci$. 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 measured in xs-ziy8-j9n j gu7t0ka 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 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 aboutj9uk-xgyz stj-in 870

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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 ta r5 jsdw3yy*n(ke $4.0 \times 10^{20} \; atoms$ 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 takebn qjmk:y+0 n2dt pj;4 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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