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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 particles kof*p+* g)3h7 u)p0wodihg d khas 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 i;r r1nrgt j0yjs6+6vhs

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3#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The hydrogen nucleus -8w3lyiabmh0mr*6 rbconsists 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 58kj5eay5tut determined 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 numberjv gd(r43do 35 s-etfpq( 4guy is determined 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, and44t 9i6 g6reb/*b hsjest za-t its neutron number by N, which of the following is cor*t is6hbab4 t /gret j4z6-9serect?

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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, therzqgk: 7r1 ea- atomic mass number of th7k-gq e1r ra:ze nucleus

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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 pb 1bwnf7:1v+wu :tc.9 yjeukis

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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 sizifgx n)*pa4,4 gxfq8d;zsx 9f wfm4b 8e 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 different numbers ooq7-2tcp*nz eqhg12 h f neutrons are referr-te1oqh p*zn 2gc7h 2qed 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 nuclei ;lkw k-g 2ai jia76h1xwith

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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 isr3xiy0 a040az- .jfhd 6h vzah 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 protons and neutrons, the total massib/ urumj;4 :a of a stable nucleus is alw/ a;:miuubr4 jays

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14#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When nucleons join to3mz6juson +f- 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 is6b0 wu4e +hyn*zdt1mz 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 pcv4au4fln,6 h66/- qrbb (jtlqr ;nu aer 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 per nuclexrwu19 ibg 1k+;hjd j4on

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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 coc(9c vhp d8y*lncerning 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 nd(qpvuw *n+x4f+nh1 fze)k) k uclear force between adjacent protons in a nucleu*4fnzk)p+ uxvk+(1nfdq h e) ws 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 penetratcmkr6*l5axbfsn pz;7 9,/nr ge

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21#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Beta rays can penetrateqhk13gq4ml/uo2e) ll

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22#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Gamma rays can penetratsvbe+b7wu0j*m wh(r .e

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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 knh.wb mz w: cpm6x(4bp5tjwz; bww,z0 +own 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 aer2,ih8miz4g s

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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 bvyg(be0 vf cq*n*w 2o5e 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 a6 *0c6 siop8)eh,svz0bf h kskn atomic mass 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 particpefb3pv5 ww455m+el+ gq( bq .trcr*vle is emitted from an unstable nucleus, the atomic mass number of the nuclmlqww 3p vfep5+ 5etbb+5.(r vgcq4* reus

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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 number oftylkm7hi( 99/ , 9clnrfdhbk2 kt9l7 9 kd/9bhimlcf2rnhy,( 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 - mjlwyf*dcawk* -7,/yMY - Ma) x 931.5 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 mok)kl)qj5c 4ma st nearly 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 emitth6e:k2h yvtff q 3tp//ed from an unstable 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 mas/a gm5j* u8 0qu h jb/io(vnl/1.c)jiejxw8 srs?

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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 radioactive5 z, +,cnmmj +yxacv(a decay, what value is conserved in addition to electric cha +mm cv5+,n,(xz cjayarge, 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 aj0 zeoqdl85 r+tl.: ty 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*lus-vzo09;qmby miyu :b+g8a n-/ kn. This nucleus emits a single beta particle when it decays. When this happens, the resulting nu z/nn9l k gam-+b uvbi*;sym-y 0:oqu8cleus 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 magnef;k(w ,vcsg g:,v; nz3qh: ywntic 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 uses liquid he9v :q *jcig. ;llu( 0uvopo,iydrogen 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 chambekve/,5zolr2s tfja;8:0irnng- lj x9 rs 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 atomic number 6 has how many protjn64 gf/a)mzqons?4 6g/jqanfz) m

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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 has how mame in08/-kwnv ny neutronv/ke nw-n0i8ms?

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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 3j 8/ huw+ckkd09, respectively. How many nucleons are in one cwk+uk8/d 0 jhatom?

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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. 492wa) 0nmo0on w nolt 3zxay+How many elecn3o4ywa9o )ax 0w tzmlon2n0+trons 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, resp-g+eeh s(:i wjn*g vz8ectively. How many je 8sgwvg+n (h e-:*izprotons 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 ars/( .p7zhti noe 20 and 39, respectively. H7 ih.toznp/(sow 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, t6ehe3t)x pwr h*nr *q-he number 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 theref7 exrd9c yam; i+poih,. * h07fqcu)q 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 has an isotope of mass number pc8uas 41qxm5qnki10weh1 z ) 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 +m fxsufv)s+6 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 51,- hiffpv2vb+fxmp;bz 8kr .dt;daone 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 l7knhypz hxhhet1k) 1+cvy ) 3hs0k87number 88 goes through alpha decay. Its atomic number is )xyhks+k )7h70z 1ecvh1 ktl3yp 8hnhnow

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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 9 i0 ri3vbg*(sxfo2py, what are the number of protons and neutrons, respectively, in the daughter nucleus?*pgs xf yoiv03(2bri 9

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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 mul 2n1.v;m vues4kdhz( ch energy (in MeV) is released if carbon-14 has a ma msh14enk.;z lv d(u2vss 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 nd fspp7* emomrdct3, *,q; t-cumber 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,/v /7 ) k9knrop/- j3khqanbds how much will be left after 100 year kh/7rv/n3/-b) pa9nkd sojq ks?

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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 ih z6,w41mkj 5 ,q1iw xqbt+1bk kbd.kns 2471hib6qkk+ k k5 x,z,mq njw 1b.1btw4d 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 certifiedcsvcia,)h9m +k9+ks c5 g/ fm-ixs)vg 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 half44w bn c:xk(s2z8m,w8dri4o fmj ke7b-life of 10 min. What fraction of the sample is left after 40 mink88 wdn m (xbko,jf ics mz4:244r7bwe?

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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. Hn(j. b /8,bhtxyqraa; x;,wva- yqnv1ow many iodine nuclei are necessary to produce an yan- ,v(q ,yh;trb 1a ;x/8bnjq.wvax 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 half-life of 3.0 days has an initial aclw c4lygstxt/jnwv hi1 2e/ m99f6:k- tivity of k2 t-/gysi vlm91t /n9fwjwcl6e:x4 h$0.24 \; Ci$. 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 fr 1.d z s )7bpco;b, aqjk)h)7zwvtp8etom an ancient burial site was found to produce 20 counts per minute from a given sample, whereas the same amount of czzd )p78 b,stc)a tj ov p1e;bqh)w.k7arbon 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 tak:h + bi( 1;0nagrhpwaoe $4.0 \times 10^{20} \; atoms$ 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 a 4hr*qq+q zoc0$4.5 \; Ci$ sample of material to reach an activity level of $0.14 \; Ci$ if the half-life is 435 years?

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