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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.6mifyrr6 cb3t: 60t 2lg dfyo 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 istf gblzwb.-41

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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 ;a6s7b8z97m -gbhn*lajh ebg sts 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 deteriut6 s bztq77d),f4zrmined 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 dets5xmd7/c azk4u,0dx0)wtj ac5fzg ;cermined 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, its7v8eiz( njep) i,sq;imrsfd::d89 nv atomic mass by A, and its neutron number by N, which of the following ir:,9( ie8f:i e qd7 vp 8mizjsdsv)nn;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 unstable nucleus, the atomickdhnd ++24mnn mass number of the nuclehk4 +nmd2nn+ dus

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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(,ym vvd:b tjfn+z* )v 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 )g qj k(p4p5umof

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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 atf(c, arorn5z;omic number but with different numbers of neutrons are referred oanf 5c,rr(z;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 n,n3fxumsw u790xf8j 1fdnpp93a xr8 quclei 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 defi;9wjfj +ods-ydn z w.5ned 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 pr,2d8vr/ yg2fp 9o uyo,ov)cd hotons and neutrons, the total mass of a stable n,yyvuo2dp oo / f, g8rv)92hdcucleus 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 form a stable ryrtrxkt l(;57rd-6isnpg 2/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 nuclevp 7g2 zi 5qstvoa2g/ e//5ljwus 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 nuc1e pz 8 iv4)sj09h*up (ensnmeleon 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 nucle2g7qg y a4a6ga j,ov.ion

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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 8 x:jin f+sx zyz*t9nj,1oh p)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 q-arvld;jmqg+q1;yz q982 qn between adjacent protons ig 92y+ n-zjv ;q1dm a8r;qqqlqn 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 penetrate.m1 .zarj; s8,vo zqkcn(m2i 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 penetra u-qyv81bz ah2)n-sb-ldq*k xx/x) um te

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22#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Gamma rays can penetraten n53z+dvtjiw27-a rcnd p0 6a

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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 an6c 8 q+k me,i0ti-cvcs

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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 sx4gdm+z h;p6s.wi6f- fwh +f known 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 tu4wa3txr.t sp; i9d6,sh;i)al g;s sro 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 +/ io w6cyxkak;8q(lqmass equal 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,7bwvo f 65ejflki0yc7wv (2y( the atomic mass number ofc2k6v0(b wyoe(w7f5 vj iy7 fl the nucleus

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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 0l ehm hec7f2 6; r .1n tlifis3.a;p/lfla+ijis emitted from an unstable nucleus, the atomic number ofai0 h2e3tr ah+lsl7f lie 6cijf;/;p f.1lmn. the 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 93cs afh,ur;e ,11.5 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 nearly the same as a gamma ray?e:ldi7nyom 2 .

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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 unsta 4v8ps) cto(itble 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 mascxw i 5kon:*/j0)kg bbj(j5mls?

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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 uituu7lpl0 b/w, gh ar6q)8 (gp6 m(whto electric charge, energy, and momentlqm7 086g6i rpwt,ha/(g)(uh lbw upu um?

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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 h(.fuh;+ d uzraalf-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, car0:z5+ugq auloj2f*p rbon-14 is often used. This nucleus emits a single beta particle when it decays. When this happens, the resulting nucleujq+zruolp *g: 0af 25us 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+; 46ye8lpr7vf- d/tf jung pmses 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 thhub 1 b6.z .dk +shm0(mh0pxz*dfxbk*at 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 r dcbhg.x- 0 :dxyhd,i8eplaced by bubble 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 14zeswrr;2 4 (ujzx(6xx3u fl 1c and atomic number 6 has how many protoncuwr21r xz3x4xz e((j l ;sf6us?

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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 numbert.6x9q 8fnzr2 hl0;o wh y/rf yih(3th of 14 and atomic number 6 has how many neutrons?rt8 .9hr0z3yq/ tf( w o;n6hhyfxlih2

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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, rexk1ouk+aq72g 8q9sf xv8da n3spectively. How manyd1xas9 qgk3x 2k78n fau8o v+q nucleons 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 7s0jrs0j5 tplnumber for calcium 39 are 20 and 39, respectively. How many electrons are inss7t0jjl50 rp 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 calciumcy5px0;xacb3. j iaa i uv/trg)+0 2mn 39 are 20 and 39, respectively. How many protons are in obxuvg5tnc apr y /0) 3;2ijmiaca0 .x+ne 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 arehuc4jm (y7swq,4. v pl 20 and 39, respectively. How many neutrons arev . c uqj4l7w(pmsh,4y 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,f*:e; zkqg5 wv3e, qi*pglny8 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 carbon-0h 2klwnk/ i-u5z7kl w14 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 numbef8sel:jt:,k2q brrq9p2- a dgr 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 energyoexyky/ t; 9m6e/kzz xc cb-56 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 protx3 4p1zbx8v ( 5e3vcua b*gq v1+bwaajon 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 throx1tn/p h pfw .t-:1toiugh alpha decay. Its atomic number is.i-o th/xnwpt:11tfp 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 apkm fe.rpdz0f 3v s4py:2at*4nd 249 nucleons. If it undergoes alpha decay, what are the number of protons andtv2p z434 e: yfpp0rskda*.m f 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 db*4d;zqkevg(8h z4tqa+ i c.a4: rj owecay. How much energy (in MeV) is released idqc o4v8q *:bk4jriz aa4;gt(+w.h zef 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 atomivu*y/n ohq n).)8xizic number 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 afd.xw x*lm(p 1m:.b,o6 kkftaetx p)p;ter 100 years?o tmped.1,xmxkt: .p6p f(w; akx)b*l

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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(knc4 hdutr av-e(h:( decay this year if its half-life is 247 hv(( k4dh nt:e cu(-rayears?

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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 z+ 70as,t l;xhi jjl ld;d);hgcertified 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 :*kgwlk l79ddthe sample is left7 :9dlwg *lkdk 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 day6b yfkgxlgkw65h l;53, e -qexs. How many iodine nuclei are necessary to produce an aw5;5lle f -e6gkbkxy g36 q,xhctivity 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 ofh2sk9i(9+fv kxxcomro;92c f 3.0 days has an initial activity of fv29 s+9xcfo h2oikc;m9rx(k$0.24 \; Ci$. 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 of a wooden casket frompgy:rc xtxua295 b5m8 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 we5u5y ag b82 rcm:x9ptx 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 take im( zzf32 ,aee34ny7)zkolb40koulp $4.0 \times 10^{20} \; atoms$ 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 +9qk j9r 2jddga $4.5 \; Ci$ sample of material to reach an activity level of $0.14 \; Ci$ if the half-life is 435 years?

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