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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 nn2ii,n93cex5t x6t 4 0tojm nthe 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 i7g396p ni0ujirno/z ys

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3#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The hydrogen nucleus consist a+oox(pl l3 ngp)pg17s 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 zkn1s5 2dh s:sthe 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 determined7jmvb u0 0k/qy 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 bxpnof:4bepeycw i1qv2.3. + sy Z, its atomic mass by A, and its neutron number by N, which of the following is cs.q4e wc:f2b i.x+3enpy v1po orrect?

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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 atomic spd4m);rh j- iz2hd y5:bo.rp mass number of thhpmsdy.r)-: o2bh4id z5jp;re 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 anf 0nt(.q7vegc 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 sag ccdkwne (.r5zs36 k+l4 zw.ize 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 v r t 5nhu/i95b;o2rdiw;;5 gp(zlr ooof neutrons are referred zit 5o; ;pvd5 w;bl5ih9/rr2or(oungto 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 with;g,sx* /rnxd mnp0y 0d

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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 defined ayj cvo;.(0-, us2slhg ( jnolqs

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13#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Compared to the massbx. xpcr6x8o 0es of its separate protons and neutrons, the total mass of a stax6r0x.xcb 8p oble 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 form a stable nucleus, 7e a+r82r.1zs.uoquvp:e ru w . 5slknenergy 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 contributea+uajscjmx; zqt+2.lh8f tj 6d -i3x ;d 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 u/u trkd0+fk)f2nvr8 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 nucleo0kp50 xvyarmbt :64i yn

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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 n8mz/7v0l3( ;gukcnmb o 2m rkf3dew, kuclear 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, th92s0ityz qa/u e nuclear force between adjacent protons in a nuclzyq29i s 0atu/eus 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 penet7hyq-zg+x*gi+w6w d krate

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21#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Beta rays can penetratelds) o f81)nih*n:wf f

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22#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Gamma rays can penetra+dct 6;f7lw 3frr,g ;zr +oteote

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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 a tu2gdu/,9jw)k4r5 kph. 6jw pcgev*xs

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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 knqhz + kc69a: o6 s.zveth(t*rpown 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 ahvxpp* , fojka(k,d5a1p42mlttracted 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 toud8o8:oxh5bebw+ (ek; hdjb1/ug6n mm/ ljz;

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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 mass nu/gzmq1q-ubk(c//5 *ufcyovc mber of the nucleusv /uo1q g/*m-k cbuqz /5ccfy(

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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 numqm7q0y, m zs :vhrb88tber of the nucleumhvq 8rymsz80 t: bq,7s

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31#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The expression (MX - u7gfytm :-n 2 jl:ryfi7*v4*ox dp/xgMY - 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 followia5: wjj.h: h( bw/5wv.0ujg,n nsfnmrng is most 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 emitted from an unstable nucyfr6ybb.k k5c 0;pu o 3mv+a+aleus,

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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 massuy ljjh75p.ci q bn+(-?

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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 bhn, qqfbr rg46o +)t(conserved in addition to electric charge, energy, and momenn(ht6 b,f qr)rob+4 gqtum?

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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 /fja dvm*nmv 4t7 ao10of 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 nucle ajnhvv8+1o +qus emits a single beta particle when it decays. When qnvh o v1+j8+athis 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 dgr)kd /ubnouzby 9f1( 7xubh+ /f+a3qi2 2pi that uses 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 that ug e.a mkwkk((-w .)q9dykh2jcses 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 replace t*batm 9+wydx+cac n ,n,2 dxqhkk8)(d 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 14 and:;gad q9q,s*krf8 +nln5o oyu atomic number 6 has how many proton sa:nq+od5n* uol9k8;q,rg yfs?

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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 h8kuc rz/3fo; 5z. tzcmmn2kv: ow many neutrons?k53mmro . /nfuzzc;2 8vt :zck

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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 3x g7p;s3burv are 20 and 39, respectively. How many nucleons are i7;3s3xub rgv pn 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, respech t. )ku3.py2 keq8suwtively. How many electrons are in ot. 2k)3up8. h yqesukwne 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 num 3,o1qh2 j2x nyx+ivrsber for calcium 39 are 20 and 39, respectively. How ma2xi h2jx,q+v1 ys3nrony 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.5 0f+tt0ndhdc;usi:i How many neutrons ar h:t icsfd0i+;0n dtu5e 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, p0 dv6d))rpczz1f* if+uk 1yb 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 therz/f731,t (b g , twdz8ky 6jxaqywvyq2e 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 ym4d s(a0js5e 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 enermc3,f ,i htb.wgy 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 proton fri q(u (7caw+tlom $^9Be$?

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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 jreea 8 wf n7(ty3wn8;88 goes through alpha decay. Its atomic number is no8rwy te83njewnf7a;(w

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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, what ar)3.d/iiu bjs hn4u0 xke the number of protons and neutrons, respectively, in the daughs.uid iun) bx/h 034kjter 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 decay. :ho .xw5tk9v0*v sr/s rk -zyaHow much energy (in MeV) is released-s. sk zrv/a 95okh0yr:x*vt w 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 atomtx a3v 6:w0/bnjfmo5p r+a e6fic 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 after 100 yewiv-g4glh q b48:7e tjarg4ljbtq w 8:e-gh7iv 4s?

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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 kwv)f snw.mjm3:o9e+ k+wba . if its half-life is 247 y+kwwn) w9 j +.e3f:.kav smbmoears?

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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 cert *f*r +;(n/ppnlokcc p)z eam7ified 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 fractiyj9s+l/ 9-dcqhh j aq+on of the sample is left a d/+ycjqs hl9-a qhj+9fter 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 ma , higj 1wz,7lu5ll+tj 64p4*mg srtnxny iodine nuclei are necenhr5j4tx l 41glz7l,imt *jsuw,+6gp ssary 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 0e5zr ty* y*pbin;lt; 3.0 days has an initial activity of p leiyy50zt*n;rb;* t$0.24 \; Ci$. 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 o nk69 sh5+bbya piece of a wooden casket from an ancient burial site was found to produce 20 cou5bbso +y96nkh nts 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 ta/w a (+kax jp4lzyk;d 6qv7k9ske $4.0 \times 10^{20} \; atoms$ 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 p3f(sly9t6fp 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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