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习题练习:Physics Unit30: Nuclear Physics and Radioactivity

 >作者: admin   总分: 71分  得分: _____________

答题人: 游客未登录  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 least ( je4 sy4,quyb90qvxa 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 is/vmvck:j wi.8

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3#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The hydrogen nucleus consistsmi, dc*hzs-7z6 * e8mm)m humf 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 de;gbkmt0 idq(/ termined 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 is determined b)a;,kjyyin .w-qdjc5c;wt .ry 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 0d*iy/buw7 +hra xo (/1uyviv qc4kh0given by Z, its atomic mass by A, and its neutron numbera ( /ru yqh7y4v00u/ xi wkbvi*1d+hoc by N, 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 fw6dqqlrcpvf847rruv1 q/9b i.) :zm an unstable nucleus, the atomic mass number of the nlq m8iq1rpf4 fv.qrzu6bd)rv c :/79w ucleus

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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 34b)camu6d s49zzz yhin 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 size of a stable nucleus becauseq qb1sk cfp0(( 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 but with different numbers of n;iet f:wen(z+ eutrons are referred tfniew;zet +:(o 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 wu6qu3 18ttispith

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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 define3mnc9b4h n9jud 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 9+xe (xxien la/rc0+tand neutrons, the total mass of a stable nucleus isen 9r(+xexcli0 +ax /t 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 f h-ta v6wx(:-hezjo c,orm 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 ofi662vf ogre enu; r01c a nucleus 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 nuw8toxe,f3-fro(s 2unvw a/r/m e d o*/cleon 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 per2pax +o(ljwg5dm: 5 lc 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 force 9ik :luoy*1h ;sye es-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 nucl. vauskkr/5v +ear force between adjacent protons in a nusv/k +5vku. racleus 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 penet1-: rqpo mb27spwv o5mrate

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21#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Beta rays can penetrateu8mth l;vh8/ h(v fno(

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22#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Gamma rays can penetrat+rpx(b8w /wih0t )pi te

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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 known o jn/sl41s)huh+ds -xgzz( :ras

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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 knowdv8meub8b* i9 d8 ybt.n 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 attracted tz siva53 ki, vii(9kp:4 tja;uo 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 etf,p -f4t0f fyqual 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 u iwgcf(g-ct ha(c- ep5l 5ermao*-,q *nstable nucleus, the atomic mass number of the ltr-o a(*5ip gc-hc5,fc ewg*aqe-(mnucleus

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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 unstii ooi (pt6kn ntdc351b/7vs2able nucleus, the atomic number of the nucleubc1 p /3ik(st 7ovd2n6 ioi5tns

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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. pgv,pz -klti.d1,0eh ji*( vrd kr++v5 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 nearly efbumxk6fbd ;7i6 -c;i,8nu othe 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 unstab2b5j. xalp1or to6u h3le 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 mas7, gn::u yo pxfdf0+i vu/y)xws?

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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 additionel nk+xvomt 6gy2/gv1 22+ dfh to electric charge, energy, and ytlv2 +gh2g+1f nke2ov md/6x 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 hayc g1m-lcsxo*z,o 67 alf-life 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, carbon-14 is often used. This nucleus em0sv8rj:, 8zn h csc5plits a single beta particle when it decays0 p,zccj s8vl8hs:n5 r. 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.4sb ae0ayc h/9n qv,e uses 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 usesz gd6t+soc3t0 c3juh2k.0 jsr 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 mh 5*(j mqq/xqbubble 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 numw x xx) uenv6(-s(ihjs,kqovj,2u,, iber of 14 and atomic number 6 has how many protons?u s(ui)q2, jv(ixxs ,en,,jxwo 6 -vkh

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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 number 6 8mf yo )w1c,0gk+q rhlhas how many neutronhc8 ,mk rg0w+1loy)qf s?

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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 39, respectively. *4/-goxc l4vuz11cvcku+mim How many nucleons are in c1v-il /m +kucmx z c41vg4uo*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; mehnkm+ ht k ypcn78l bgv(t)u;wkf4+tj (,* and 39, respectively. How many electrons arnmhg*p, 7nk (b yj;vu8k)4(w;he+fk tlm+t tce 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* g8p* r0;jn n8w;rakzpn +ddv 39 are 20 and 39, respectively. How;; 8wg8zp0njr**nad vr+ kd pn many 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 and 39, r.b+jt,vb- v9ocajv 2x espectively. How many neutrons arejv+jo2 bt.9,-avx vbc 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 - s*rpuzrbbzgv98.)o 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 carbon-14 nucleu kwj50:ja rkmy(2)j 4gp0cysas?

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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 iso8 wm1( 9fp9il)jxh flgtope 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 ofhz839a xw 5cxym+, nztxg,:qo $^4He$.

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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 oneyxphc u64fu/nify t //f0z 0q+ 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 numb 0o.tuac 7lg8ner 88 goes through alpha decay. Its atomic number is now.ot0lua 7gn8 c

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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 any,rizz1 59 lycd 249 nucleons. If it undergoes alpha decay, what are the9 5iy,yrz zl1c number of protons 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 nuclerpha5 12hg5fl.tgo 3cus by beta decay. How much energy (in MeV) is released fo5gch1g a 5rpt lh23.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 nu, ;h-m5vpo3kf h6ixmwmber 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, howlge0f 2 ;6s) k6qmoihbn(qll/f-d nj 3)1dugv much will be left after 100 year(ifujn63 kgshem-)nd/l 02flqbl1q6od v) g ; 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 yejz z*ngy:38r w*jaj)s ar if its half-life is 247 *sr zn8yjw:zg j*a 3)jyears?

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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 jv:pt tj/hnm8h osx2vr045 (p 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 sample is d ldml0))cw:wz* kq4 pq4gd*q left after 40 ml:dzldpkq)*)g *c44qdww q0 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 radioact; c j0eqc3p)) ( uvxglo.vyk.nc6uo u.ive iodine-137 is 8.0 days. How many iodine nuclei are necessary to produce an actip)guuc 6ocxo ; v..kv ecy0uj.3)qln(vity 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 egkd 5h gi. ypo)fg(84half-life of 3.0 days has an initial activity of 5 (fp e)h okgi4.8gdyg$0.24 \; Ci$. 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 meas4)4 2d9yhlef e wirbr,ured in a piece of a wooden casket from an ancient burial site was found to produce 20 counts per ,4y4 rwe2b d) hle9rfiminute 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 tac( 3qr1 3 yxrtdhqphv n*e+m.+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 takep s 0(ph.kgds73si3yh 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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