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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: 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 particlesiuyx,z ( gj-/2ao ,,b z4cil:v9xxsnq 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 i7lxad. irv7g. s

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3#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The hydrogen nucleus consists ,27wdzdz)2)ngpwrrk d*b,d m 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 tj+)x)k bvb90aqgg6r n wn2cj6he 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 determinm s;6jfgs )bhhqj/h3 ke:y3 fo*v9 r6ned 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, and its neut( )zqq 0vfw7dksvty4m4-cyj 9ron number by N, which of the following i (fzk4)wd9q4ymjvysv7ct q-0 s 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 unstky* whnhr*0a-a kko(; able nucleus, the atomic mass number of the h*r- (aao *nkwk;y k0hnucleus

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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 atom is cs/ cgg- i9;n7 4nrxx2yfs0wz

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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 be t:gk/ +.8 9i)djrcjraycl*p tcause 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 atomic6jbru ibsq d+2tmt77 7 number but with different numbers of neutrons are referred to a2sjdb 7t bm 7uq76ri+ts

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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 wmb(5 pkfg n27nuclei 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 0pt-ajm:lafw u:b 9u-defined 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 proton ai1-m j l(nxf2hqv.(rs and neutrons, the total mass of a stable nucleus is (n.rq-(2hlxmi j1favalways

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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*8yq/+uuosp: q p t1az form 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 nucleus is contributedjvazs-if+.)( ls+ 7 kc+rcukg 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 pern55qljaw. t4)1 +rz ky3cjnau 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 pewcjj g(6c403m5io tjc//da iwr 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 nufdw(x 31ah cg*3 q:kbuclear 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 force between adjacent protons.aw z1vd7cv0:g+nyp)j j /sgl6x0ivv in a nucle0viw1 gzd/yl g)v+vs0 :6j7xj.nav pc us 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 penetraz v*(zuc(; tz l*cb)ypmdmdu:g.. v z2te

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21#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Beta rays can penetrateb 3:phmga/6ga n:: itkm ejnil4,9 )oi

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22#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Gamma rays can penetravqpza3vs,* dxct*; i4te

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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 9inh;thxdawae.l01zu8*l ifc3 z;l-wn 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 kfelw 1891iy dsnown 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 top xxxl01y93yb 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 toq j88r2 cjhyu.

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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, th30p53tyx4c )qd/r s z2kvewcde atomic mass number of the nucl) cex yd5p4d023rt3q k /cwzvseus

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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 (zz: u xqr-f6tt73rwkunstable nucleus, the atomic number of the nuc wuz6tkxftzrq:r- 7 (3leus

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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 represent ;kgwtvt ;y i 2)-r*+tc)froxss

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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 tsx )j5,m1 tlkdbe6dyi7hrv*e0 sa+ ,b he 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 unstableo5v-:luu58+ g4wqfkf+ oegc92wkgf b 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 mass? ;w67hwfo a3mjvd d--c+q n7ap

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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 addition tg bqprz in/ 2j;gu9;6qo electric charge, energypjugqg6 ;/ z ;i2rb9qn, 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 halbpq/h/zj f8o ;f-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 emitj -7y5.tv9vjf n1 muzvs a single beta pmjfv1yz.-5vj7t v u9narticle 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 chdobo7ru-).vqlu 8 /zgarged 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 thln*g;e (5c nq+a.1sll(uf dhxat 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 c:z.2u f lbe80u/rj(a xi4kxhdhambers 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 atomicy:v lfgzq43. *wy :j3j*azt 4s5kgryb *l ctl; number 6 has how many protonsl.yt zc34*y jl*q v t4k y3;lsr*bga5w:z gf:j?

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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 haso ,j9ml09 c1se:nkqj q how many neutronn k 1jjq9e9:,oqsl0mc 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 calciul*cj9csx xn/h4r0w/ /i .q gcam 39 are 20 and 39, respectively. How many nucleons /0r.9qi 4cg jhn/ ca xx/*clwsare 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, respectit. kdl +dykk(+vely. How many electron .lykd(k++tdk s 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 and 39, resp9.gya(v4cz f q o.clp8ectively. How many p8vo9lg .q(4acp. fz cyrotons 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 kg+.p.r*gztty 6zog; are 20 and 39, respectively. Howt;t.r zgpyg 6o .+*zkg many neutrons 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 elect) b+jox-5gsox rons 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 8bi0 pumfhs:k,1o4de in 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 ha bwe)1+y/a bpcs 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 ene94 qy5j-gleojiwx3zdlsiuqqs7 o: 2 07xu *n 5rgy 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 prok ssh;yx q2d 0fw0c6-wton 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. Its atomic nuj4t 7oa, j67gft;u wr/sq te(.*dk z fgoy5da(mber is u 5 6aeggw,r(o;*fqatj ztt 7s4d/fo.dk j7y(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 nucleob-uo/5o6 jz1blivk r8ns. If it undergoes alpha decay, what are the number of protons and neutrons, respectively, in the daughter nucleus l1 okjor/-b5b8z6vu i?

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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 njwebmeo; (s. wloqv- 05c*y(ritrogen-14 nucleus by beta decay. How much energy (in MeV) .bcwye ;0 -*( qro(mjo5vsl ewis 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 *iggf(rovr4 f(/ pe)w6 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 wi z 5fz mfr lj(+p,o;p5xo3/ptfll be left after 100 years?5 zj;/ +o(mtp,f xpl or5p3ffz

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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 half-life ivdb xl/ lxeoj z(z59.6s 247 yejlezlbo/xv(69x .5 d zars?

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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 q /oh4/spvu(+i ab 5/fc9o ooscertified 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 ofxa5vgn4x0pra t;zk+j m 4s4p* the sample is left4*sjgr zvxp p+mt50 n;44axka 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-137 is 8.0 dta xx i-ou+xpb*e0x;h,:6gu m ays. How many iodine nuclei are necessary0;mg* i6huaxut+-b x,o :epxx to produce an 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 haf ucvi(9 x/me,lf-life of 3.0 days has an initial activity of ec/(,uf xm9iv $0.24 \; Ci$. 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 a piece ofyr4c huc;s dd:u/ nzr( 1u)o-preq 3-g a wooden casket from an ancient burial nddu uzso3;- )4r qru1r(y: ch gcp-e/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 tax3jn i + +uw)ubgte;swmn1s-;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 takembj a- /bkxg2: 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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