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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 ;z121p0 j7w3g4rytw8ubw gz7 p wgyaqthe 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 6tvg lwish)ul5 a0i62is

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3#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The hydrogen nucleus cons*+o5cjhi,wg mg p wh/lyyka(:3 wnh. )ists 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 the number z1o8)dc8xc t / i2sfrgof

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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 the number /l7hf lhlplhk1z0 2brk4,8puof

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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, p wdu* bd5lf*x8(fx;yits atomic mass by A, and its neutron number by N, which of the following is correcx(fldwf; 8 p5y x*bud*t?

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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 fromd; ee 5ltvt*enyu:k 1(p7f rk( an unstable nucleus, the atomic mass number of th kvr7dk teu(;e :nt5pe 1yl(f*e 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 andd7 2md:db6 rk(vz )uc 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 becau7)-z6n y7ohs6 5ylo e0fksy lnse 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 neutrons a q8znwaq9 (y tfp9k++pre refer8qny9 t qp9wp+kzf+a(red 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 witpr1f5m yfsh:- h

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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 +kbz+g 5glfd0 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 ofxcp.uw+g. ja 8u8x*. nvbfn t* its separate protons and neutrons, the total mass of a stablew 8nvaxbgntu. .jc+** f 8p.ux nucleus 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 foyfsi 3-8w.b- *v hsky ov5c,aprm 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 contriu9h4xy )p sli5buted 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 nucleonh6 t95w1 s7 rqgas ,cbn9ymy8t 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 nuclegeg ic-() 4giiz 88tzl h/3esdon

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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 concerni5 w)fd /sfqa(mng 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 nuclear force between adjacent 8d-un:2rtyt 2lqb0fy protons in alt 2nyt2u0f-q:ry 8d b 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 penetra- o -lh3rr4tpaxd7nr5 te

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21#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Beta rays can penetratenhapc29: rk ouh yi 4xjsp166+

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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-x07x; wuih;(c1,zsnlxr -n ie6xqs qe

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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 ui7 pb6:+ujo zm+p 3efknown 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 knownr (z,k.cylu 5pb;pi b* 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 wi ltvo 7th t5pyu(7v:+qll 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 mas;k,0kekm. sxsb 5l 0fm.v7ocas 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, f* ty7w - gdbfpd5:.kf4 .dejrthe atomic mass numbe y.5 tkg:pdrf 7f.ej w4ddbf*-r of 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 is eh7z/:qel8+kwaw uzzj,p vk4 :mitted from an unstable nucleus, the atomic number of the nuclej ekz 7/u, 8l:wvqz+4hwapz k:us

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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 931.9.z zd2 xkiry +,)8dxyv0a fyj5 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 nw:2snm3e q( 4kp8wgmwearly 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 emitted from an unstable nucleicdz8m ir lur0,3qk* hz(t3wqk3n *,lus,

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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 mv0w,vw1r g(vj8i a.alost 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 va-abruq8w 05)3kni gi:r j,yr ilue is conserved in addition to electric charge, ,rrbiy):5 -iiw 3kaj0rug qn8energy, 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 substance as ifag:6x *qma1q;dnc ; nt 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 o67dm 9errzf9o ften used. This nucleus emits a single beta particle when it decays. When d7e 6o9 9zmrfrthis 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 charged);zk5h euo )xz 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 hydrogiu sltcv9g hor syz di;m462 9cae.72+en 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:*urdv ,*p yru 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 numberm ulc0xg)qf ee62.gw-vb+q p3 of 14 and atomic number 6 has how many protons?v+g0wlegq-e2xc .upm6b) qf3

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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 hoc *g n+rif-dv dt3qo gfl5+itn.i . )3o-byf6dw many neutrogtir5v)yf+ddt.nfdi.f*bo-o6 ni3l gc3 q -+ns?

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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. *fp kkm0 3mwn2fe olq+*,lo /r How many nucleon *feqm/w+pmno32lrklk, *0of s 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 calcium 39 are 20 and 39, respectively. /jwgf) ,ou4y yf*mork 4ka.i: How m:m k gjfa. fyr4*wo4)uo/k i,yany electrons 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 czmn8u 8vkm * zyk7 n(qm72:lvjalcium 39 are 20 and 39, respectively. How many protons are in 7mnl *kv:m vuqkzny72mz(88jone 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 calc8 8wh 50/d8ektozcry aium 39 are 20 and 39, respectively. How many neutrons are in one atoory8dewc0/ka8 8 z5ht m?

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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 numbe4cy-v*yr+*i5 ha2jruktx 7 5o:ejjxk r 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 the carbonuw9 4v)*eers aln4+cnzm9s-l-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 aaxaq*; ghxn( d9dl.*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 bindingapt*-vq .a/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 rem)evi 6gsfmi */ove one 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 number 88 goes through alpha decay. Its atomn*j3yh+8k jh*)i0 kcfnfc4 ioic number ishn+ k8*no j4f3jf0 hicyc k)*i 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 5*szg0ai)d*y4 br;mnocc w *0 bjtzf9 nucleons. If it undergoes alpha decay, what are the number of protons and neutrons, respectively, i0zcfwjb9yng m4 rd;0*a)*io b cs* tz5n 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 7 rz;nci0rul:r, g:yv decay. How much energy (in MeV) is released if carbon-14 y0,ri:u; lzvr:r g7 cnhas 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 6 underr ):krxxtp9 1m 5psq+3d ekv,p0z(tougoes $b-$ 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 m zidp )1nr* hw;q0b(yoaterial is 45 years, how much will be left after 100 year hb*niwryd) (;1pz0 oqs?

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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 tha010otn4syd +g5)-v+w)g zukyu ecyz1a 0dcm u t an atom will decay this year if its half-life is 247 umyuk 01+taz -zswgdc0dc4 u)0+gn 1eyo)y5 vyears?

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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 certrt7or2 1;uh/wj5b gdaified 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- 8 +zlsk7c6b7 xdj:dtzlife of 10 min. What fraction of the sample is left afzcjt zd+bs8776dkxl: ter 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 manytp4 2hw2zp.x e usnv-:uk6vq9)bdwl 2 iodine nuclei are necessarud6k:)bn2 elx w4wv su 9vtq.2pz hp2-y 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 half-life of 3.0 days has js27m uj7abiqgw6;a 2 an initial activity of 7i 7q a26jsbu;jmgw2a$0.24 \; Ci$. 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-1mi5vz /z/0i x t1pk*ho4 measured in a piece of a wooden casket from 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 emzv0/moiiktz* 1xh p 5/itter, 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 takefyabj qrcqa: t-n3 s,+6vq92rpe4i(k $4.0 \times 10^{20} \; atoms$ 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 takc wdk+r jb8;jf2+5pdke 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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