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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 least 0jo1ofsgd+zncer+ 5xn-r u/- 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 isqjo9njt9xp31 (qivp tkx,a 6(

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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 oxc 7 q:,c.jfg6i+ ahmrf

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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 determineddf7,fp mn v2wiqf5ct83g.8cl 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 by 2:lmwg,gp-hyvq83i0 od md2 zirlky,) .(cs qthe 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 Awc46rp ;9n ss/s m4e(7wuzkt a, and its neutron number by N, which of the following is9w4k(/m7an pstwz 46r ecsus ; 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 udsh+d-9 h6ezfnstable nucleus, the atomic mass number of the dhfhe6dz 9 -+snucleus

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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 6owhb)3btg5r in 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 fs*jwm-khjd3 x p*dmj )s5 (t9size of a stable 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 number but with diffn4dt31nhcf:8g iwlt 4erent numbers of neutrons are referred t3:nhgt8i4 ct 4w nldf1o 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 with3bdvthj5 *8g0ix ixm (

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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 ispz kx;3hssq15* +qdkbsr jc1 4 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 oi k1 d/- 88x6plvyqjadf its separate protons and neutrons, the total mass of a stable nucleus k l v djqp8a-x6yid8/1is 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 nujuudk4 11q sw4tq5ln8cleus, 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 contributepyvf (h t 3;j;9mby.egd 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 i l(wen,cq4n7gs

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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 nucle9a*;zhj9k pbhi:*rdu2i9 fnyon

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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 h 2kcdm*e+16vi.j1 j t*fftmn 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 forcfaak8nq.7xj( gwvy9.e between adjacent protons i v jx.9kqnyg7wf8a( .an 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 (2n ::nultkc)nhm+nsh;pr:y 0w gac7

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21#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Beta rays can penetrajatwkq- -o (i;n0kdj 5te

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22#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Gamma rays can penetrnv2i5*fqg8 a gate

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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 also0- gob xaek,8fbqq 3u; known 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 kno(;rsvf 9mb4y mt u :m5tqu3an.e /i(8ez)nnw fwn 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 wilrt y-h6 k5e;k,u 6*xhj -fasovl be 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 tvvf-w).l o 24)kwqxecf /v tj6o

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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 ape1y3. hl n6emass number of t6nh pl1 e.e3yahe 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 is emitted from an unstable nucleus, the atomic numb5 qcx6n 8+lu*uem lc1ier of thxem5*+c6qlnlu8i c 1ue 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 rh9*b2ggn;ix u epresents

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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 k xw.uuc 2-*40y7 autvtxc3 czas 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 unstablesv51mr7y er+g 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 mocozg/ n ;nc4j( hw7w4j ql*h7est 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 decay, what value,) eqmgmc5 3fru 9vm(g is conserved in addition to electric charge3q v,g(rumg m9 m5ef)c, energy, 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 half-life of a radioactive substancqw3l (5xe is-le 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. This94g 5ah es0a+ieeep 0e nucleus emits a single beta particle when it decays. When this happens, the resulting nucl+ 9is4a phaeg50eee0e eus 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 chargwh+zdx/ma;h.:*75 w ,vt co xtkyd0 gied 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 usest,h:uk2l 5 h*/alpr ab 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 m3steucvoz/ jis:-u af15:,sbubble 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 anx;7 ry64l9o. r5fxijrs9o tb ad atomic number 6 has how many protonst 94ori 79 ;xfl6sb5xyr.joa r?

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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 numbebl)3y dzxy bz 7)cv8fw4ko*9az+6w 3pzmz fo9r 6 has how many neutrons?fxzcz3fzyyv49)b m)apwz3 *+l 6w 9ozokd 87b

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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 calci/jz (rhd;+xbhq4+l imum 39 are 20 and 39, respectively. Hmxl +/d 4h+irj;(b zqhow many 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 number for calzb ewyefr1:p 4hhj18zfr.;wc.k w5(g cium 39 are 20 and 39, respectively. How many electron1g1fzr h8 rf e ;bejzw(k:h .wwyc.p54s 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, respectiv*yh fqx 8 3oihpt*39(db/,jqen ;w btoely. How maftq;oh8b*o3py n ji ehqd9bwtx( 3*, /ny 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, respectively. ))/ce s2-n io8mh 2iv:a mrxtb How many neutrons )/iobah2- x): 8m2isvn emtrcare 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 numbzg-uk3u qe)+8.9pe,p emn lfder 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 tk) wjf ,wcxnl5rc7i* )ar1h:ohe 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 has an isotope of mass nu8*: 7trq) dvhf+rtut6 grrj d0mber 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 -98 hc53ur rxp5 bujxo;8ltyyk rvk-1 fn.jc-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 remove one put t -gv5.b)ooroton 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 th5zq9y+1 xg t4y5 ymwqh )2izjzrough alpha decay. Its atomic number is n+9ijq52)q zy wtxm4 zyghyz51 ow

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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, whatzy3o7zrez)y etn5b g.h7a+ a9 are thto+5 znhbeayg9z 7rza) ey7.3e 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 nucleus2by wk;)4l(tslme b/j xmzg5 3 by beta decay. How much energy (in MeV) is released if carbon-14 has a mass of 14.003242 u and nitrogen-14 2 )43jblym zb segx5wt(ml;/khas 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 * f4 w,ntzezhx669rx,6w/qlt/ oitct 9 5 ozqn6 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 bu(zs bo7r6ny-e left after 100 years?sru7 b y-zo6(n

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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 halfqmw r- mcb0b96-life is 24b rmmw9c 0q6b-7 years?

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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 certi 6 gf-s.sjo8ti5f5sikl* 7uz ofied 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 x5s4dv 7;dqjtr;et 2athe sample is qja4e;s7t 2 5rx dv;dtleft 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 days. How many iodine nucle8hxg(jv9t4q gj x0 0 m wm1ur9wsd(wk7i are necessa w4xj00g1mu 9w9km(s7r8qxtw(hg dj vry 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 ajxuso1q5 pl (7 half-life of 3.0 days has an initial activity of u s7q(pj5l1ox$0.24 \; Ci$. 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 1;cg - jigtn(wfrom 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 5731gtn w(jic-;g0 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 take rx1iiuzssb (y8 )* 1tw$4.0 \times 10^{20} \; atoms$ 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)h)vddv5 rq b( 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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