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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 77j.vhz1eln hwl)kj- has 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 i9l.k .sk7nhwis

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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 or aqzy c02)th1up o;m4f

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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 tvdp:9 jl5m/yki hh6rvp++6 his 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 number is determined by th:4ap8 (rtcol*/k:juyx s.u lv8yj9r ne 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 Zn+uosy: 4rk 8t08 kamc,mcul4, its atomic mass by A, and its neutron nucnm8s:4l urc40k+ak 8,tyo mumber by N, which of the following is 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 fro9 vc8aue7w7 zmm an unstable nucleus, the atomic mass number of the nucleusavm8w uzc7e97

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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 f yw7hq0 m; jl3xt 1j11ax8;/ikq 3ty l/obfbgan 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 because ov (o ia7ofdcj.9p/+j -uim ,ahf

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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 differend crz.hzwk, lxev 8bao; 1)c3 3( a0+d.ftchtbt numbers of neutrons are refe1 .ktb(h ad.+3bclewvz30zcx8;) dc frah t,orred 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 wnlhy)t yc9,h1ith

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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 p m1v. 7jipq1 vj*ws:r gey82udefined 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 mass of apd c(o*bi p)s7 stable nucleus is alwas(7)*obicpd p ys

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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 stabbdh8y8el j6t9le 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 contribnkt:a u( . uk4; hboyt3typj+(uted 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 is9:t3ix (vk6wl wa( cgg

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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 nucleonreq +nn*9q tu.

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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 nuctg 7z2( ew0knag1t; wrlear 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 electrostatic15cpqh;wl72 mgpa9jy force, the nuclear force between adjacent protons in a nul2gjpp y1 7wchm95 qa;cleus 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 penetr ep(9 ufr3frc e+-xes9ate

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21#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Beta rays can penetr5kjpe)r )jbw/wk(f 12 7e blpxate

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22#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Gamma rays can penet a3*k jtp/efc++k cg:brate

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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 kjg6xhzn4ymy 5u1/ l cove37,o nown 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 o:7fqwcect)/ 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 tou 7x 0gi9,vr8t r+fsazgu*-m 2r1bbgq 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*4 )jkb o/cjvuslq6 f: 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 particle is emitted from an uns7vg(3tozn u3;qvcg5 i table nucleus, the atomic mass number of the nucleigzn3 ct3v;qo7v(g u5 us

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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 ancwqp.+*ivi cy rw2 *l+ unstable nucleus, the atomic number of the *v+r icp +cwil q.2wy*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 ac:p4(a rl -ly7wi:nlk5 y6qurepresents

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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 i,1y0f+, pnzvgi4qewys 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 7q;9cksnek wj;e,lc 2nucleus,

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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 o.uc ggs0w8vr/py ( su5og 0*gmost 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 is conse1r6ndgkgdh 4.u 7mbz1rved in addition to electric charge, energy, and momd17 u d6rhmbzg41kgn.entum?

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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 asqcw5.:). ce fo vy/ujz 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-14kd,dja ;q55:x zc b/sh is often used. This nucleus emits a single beta particle when it decays. When this happens,:z;dk5xc h/d , 5asqjb 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 aa.c.3w/ ohgd +(gpb xykp -s:c 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 uses liquid hydrdb x,(w(tpfn*ogen 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 bayc+qvnz;h pw+s* v84 ubble 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 2ab1u xe12 cklnumber of 14 and atomic number 6 has how many proton a1l2x1k c2eubs?

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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 many neu3hl:yz1 1 bkb-hh 6pdstrons? p d36k1bhy:h1hsbzl -

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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, chl.qbcq, f -g (h srch80:bhewmr98,respectively. How many nuclel0bwc b89q,,e(:s hg.rcmrhqf-h c8 hons 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 forfpij m6zv-5 k( calcium 39 are 20 and 39, respectively. Homz5 (kjp6ivf-w many 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 calcium 39 are 20 and 39, ryf ff qx+e c5u2ry8m cyw;40ck;mmk2 0espectively. How many protons are in on2y4wrumyk0f c8 ck; mqf+0y;f e xcm25e 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, respectm8cnxnl,.7rg2 e yc8n0 9br*9fr plm cively. How many neutrmrf,8n72rc9bc 9p.0yex 8lmn nl*grcons 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, the nyk7j,yqiv)hb v9*6 b sumber 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 t 1 cr fqakl8sk642)sgihere 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 4-5ns m/3c2 vbip 3 1xtaeryutisotope 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 energy7 wb.3ycdjez n) j5y1h 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 requi sbzcmbvk9*-9 s /w-tared to remove 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 a*-d qwuy/b -wtlpha decay. Its atomic number is ntwwqyd/ --b*uow

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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, wh7+,u reubvl/3i)z twdc4dk5v at are the number of protons and neutrons, respectively, in the daugu+t /7wdvv4zi3d)u,k bel 5crhter 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 nitrogenxw7l/ b8m x,n)bqd4u gfdm l1,-14 nucleus by beta decay. How much energy (in MeV) is released if carbon-14 has a )m8xb/dq1m7bf,lulx g n,4w dmass 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 undergoecqai8uu h5+ v;. (tw3b g+cuaas $b-$ 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 lelytq. qyx/l(6. q4bmyp/bn . uft after 100 yearsqyb6b4l/. q/(x yq..tmp l nuy?

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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 r +1 06 9rvatjsvjb6 .yl7xoku6p5kkwan atom will decay this year if its half-life is 247 jkas 17.bu6ktoyrj5 vk 6wvrx0 9p6+lyears?

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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 cert1)4s8k;cnja ,jja cu dified 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-x 4vss e)2ymx;gb:jx(life of 10 min. What fraction of the sample is m;es) 4 xj(sxby:2vxgleft 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 ; b+e; +dxqotpnv95khmany iodine nuclei are necessary to e+k +qvxhd;b 5p9;ton 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 an q/e8hsrtyp o04o1.tf ,q3hck initial activity of 0h.op,sft 4c 38yhtq kqo1 /re$0.24 \; Ci$. 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 w * 1)m:eh2kd2srx fpd,ki9x2fs )slp yooden 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 minui)r:xlf1skk ,yepmsh*f2 s pdd x292 )te. 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 take uqz;6 :lfdwy-$4.0 \times 10^{20} \; atoms$ 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 por/*p9d*r7iqp t )jeu 0k* ix$4.5 \; Ci$ sample of material to reach an activity level of $0.14 \; Ci$ if the half-life is 435 years?

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