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习题练习:Physics Unit30: Nuclear Physics and Radioactivity  作者: physics

答题人: 匿名未登录  开始时间: 23年05月01日 14:16  切换到: 整卷模式

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1#
 
单选题搜藏此题  
  Which of the atomic particles has thexdd05x01s 6k -nzczg(w rax 3j least mass? (1.0 分)
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2#
 
单选题搜藏此题  
  The mass of an atom is2qq gj/t 01o*./* 3j d3aofvjkhiha,frw, kcr (1.0 分)
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3#
 
单选题搜藏此题  
  The hydrogen nucleus consists ofn l 1tx3ir*j0px/ew 460oplgx x6s v;i (1.0 分)
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4#
 
单选题搜藏此题  
  An atom's atomic number is d utyn6jb5a 4c,mqt y+k2y7a-wetermined by the number of (1.0 分)
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5#
 
单选题搜藏此题  
  An atom's mass number is determined by tgmpa t3xn sy7,4 dp5bgpi)n83 d0;hrh no ,w7lhe number of (1.0 分)
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6#
 
单选题搜藏此题  
  If an atom's atomic number is given by Z, its atomic mass by A, and its neutron q kv91n*rn0ebel7 2t kh-l eyir9 9v8rnumber by N, which of the following isqnh eb8 1799n* kvr-l9t0yrkv elri 2e correct? (1.0 分)
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7#
 
单选题搜藏此题  
  When a neutron is emitted from an unstab .l ish yas 68g0k-:4kaoduuo+le nucleus, the atomic mass number of the nucle du8o+ls0us .h4kok ay-:a6igus (1.0 分)
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8#
 
单选题搜藏此题  
  The number of protons in an atomucq.*p /nej9q is (1.0 分)
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9#
 
单选题搜藏此题  
  There is a limit to the size of a xglz 6r1so03 7becq 3hnh *p3xstable nucleus because of (1.0 分)
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10#
 
单选题搜藏此题  
  Atoms with the same atomic number but with dz+ 1:ctgvq lbd+3 o d,xql5iq3ifferent numbers of neutrons are referredgxlq ddoltib5++q3 3zv:c1 q, to as (1.0 分)
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11#
 
单选题搜藏此题  
  Isotopes of an element have nuc *3 93x( jupek,vxntrfm9..cuyyc sy; lei with (1.0 分)
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12#
 
单选题搜藏此题  
  The atomic mass unit is def1 1rh,ud8ehg* fsan 1lined as (1.0 分)
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13#
 
单选题搜藏此题  
  Compared to the masses of its separate protons ana4mk eew2,pnc4yf+ su )d h-qhdhq94/d neutrons, the total mass of a stable nucleus kcqfa -eqyed 9h,4dhh/44sm wp+u)n2 is always (1.0 分)
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14#
 
单选题搜藏此题  
  When nucleons join to form v;kaz.z sbr4us1k6 b8a stable nucleus, energy is (1.0 分)
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15#
 
单选题搜藏此题  
  The binding energy of a nucleus ix1pkvy5 *9lw7ifim * is contributed to (1.0 分)
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16#
 
单选题搜藏此题  
  The binding energy per nucleon i)3 /vx)h ( ebppdl;wyis (1.0 分)
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17#
 
单选题搜藏此题  
  The binding energy pnntbw3. *ibzda9v d2) er nucleon (1.0 分)
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18#
 
单选题搜藏此题  
  Which of the following statements concer6heycif .,p m-ning the nuclear force is false? (1.0 分)
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19#
 
单选题搜藏此题  
  Compared to the electrostatic force, the q:-fc9z/e4e3 /p9 b tvmqx hq/o1fttjnuclear force between adjacent protons in a nucleutcpft/1b94 -votej3x/e mqh:q 9zq/fs is (1.0 分)
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20#
 
单选题搜藏此题  
  Alpha rays can penetra0hm wni .v-q;jte (1.0 分)
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21#
 
单选题搜藏此题  
  Beta rays can penetrate fumyx c2r qd71(6z9ao.)-q ct/utivw (1.0 分)
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22#
 
单选题搜藏此题  
  Gamma rays can penetratd;8;:ypw2h zi)baeynayr ds6r2q6r0e (1.0 分)
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23#
 
单选题搜藏此题  
  An a particle is also kn.; +va95z)m mzktl nvaown as (1.0 分)
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24#
 
单选题搜藏此题  
  A b- particle is also known ascu6 p(e2 :h dttc;e3trl/tup 4 (1.0 分)
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25#
 
单选题搜藏此题  
  A $b+$ particle is also known as (1.0 分)
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26#
 
单选题搜藏此题  
  A gamma ray is also kn i ygwn)u2;w8h6.slqxown as (1.0 分)
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27#
 
单选题搜藏此题  
  An alpha particle will 9v xp+k m*l1tqb+q08w 4keqvx be attracted to a (1.0 分)
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28#
 
单选题搜藏此题  
  Alpha particles have an atomic mass e)il+kmv 7 nzigt8rk,1qual to (1.0 分)
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29#
 
单选题搜藏此题  
  When an alpha particle is emitted from an unstable nucleus, the atomic mass rv( 93uc w aqqdb1r+)tlezvynwyv4.r 45 g+(jnumber ofw)v++vgua3wyv(bd(4cnqe5 r 4 tlzq9j. 1ryr the nucleus (1.0 分)
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30#
 
单选题搜藏此题  
  When an alpha particle is e z)y7b)wa 1 7nqq+,dgm/efs .2skviar mitted from an unstable nucleus, the atomic number of the n 7iq dk a )sw2,a+.s bvr)qze1/ygfn7mucleus (1.0 分)
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31#
 
单选题搜藏此题  
  The expression (MX - MY b *u-k;pg4n iqer30kd- Ma) x 931.5 represents (1.0 分)
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32#
 
单选题搜藏此题  
  In beta decay (1.0 分)
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33#
 
单选题搜藏此题  
  During $b+$ decay (1.0 分)
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34#
 
单选题搜藏此题  
  During $b-$ decay (1.0 分)
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35#
 
单选题搜藏此题  
  When a $b+$ particle is emitted from an unstable nucleus, the atomic number of the nucleus (1.0 分)
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36#
 
单选题搜藏此题  
  When a $b-$ particle is emitted from an unstable nucleus, the atomic number of the nucleus (1.0 分)
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37#
 
单选题搜藏此题  
  When a $b-$ particle is emitted from an unstable nucleus, the atomic mass number of the nucleus (1.0 分)
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38#
 
单选题搜藏此题  
  Which of the following is most nearly the same as .8g 1fsqdm77bybd 3gt a gamma ray? (1.0 分)
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39#
 
单选题搜藏此题  
  When a gamma ray is emitted from an unstabhdp 2y lsx96 hv9 c/l:)qnk9njle nucleus, (1.0 分)
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40#
 
单选题搜藏此题  
  Which particle has the most mm7exw :wa-l s9ass? (1.0 分)
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41#
 
单选题搜藏此题  
  In all three types of radioactive decay, what val v4py3kyy2y rk14 nbt0ue is conserved in addition to electric charge, energy, ay0y3n4p v 4t2r1kbyy knd momentum? (1.0 分)
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42#
 
单选题搜藏此题  
  What happens to the half-life of a radioactive substan 2(-wbfc f ;b3te fm6fjggp)/vce as it decays? (1.0 分)
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43#
 
单选题搜藏此题  
  In radioactive dating, carbon-14 is often used. lq3ja/l7xwcp p 5*6pbThis nucleus emits a single beta particle 76w jb*5 /xcpp3ll qapwhen it decays. When this happens, the resulting nucleus is (1.0 分)
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44#
 
单选题搜藏此题  
  The type of detector that uses a magnetic field 3 jt6:)l6 gvcry t0ibtto curve charged particles is a (1.0 分)
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45#
 
单选题搜藏此题  
  The type of detector that uses liquid hd :1w bvfhg o+k1pn((hydrogen is a (1.0 分)
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46#
 
单选题搜藏此题  
  Cloud chambers have been replaceo5i xbt)aj ( pzejset-8551 tud by bubble chambers because (1.0 分)
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47#
 
单选题搜藏此题  
  An element with atom2d 34aj;sf udz j3vg,ac ;+qbhic mass number of 14 and atomic number 6 has how many protonfgh; a,34 vz aud;+bcjdq3sj2 s? (1.0 分)
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48#
 
单选题搜藏此题  
  An element with atomic mass number of 14 and atomic number 6 has how many neutrs8zb) z-.cqywq-wo 6eonsb)c6qyz-o zw8weq- s. ? (1.0 分)
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49#
 
单选题搜藏此题  
  The atomic number and mass number for calcium 39 are 20 and 39, respecdfg haudk e l9xob 44 *lvzn06;8n7(rytively. How many nucleons are in one at8yk vnrl 47 f46;b( gh9o0dxedz alu*nom? (1.0 分)
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50#
 
单选题搜藏此题  
  The atomic number and mass number10vv idtf 5.rz)oy2ot for calcium 39 are 20 and 39, respectively. How many electrons are in one at zt2o 5y1vr it.v)0dfoom? (1.0 分)
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51#
 
单选题搜藏此题  
  The atomic number and mass number fe yul2d1d(+ s- gukbjm .-a/wcor calcium 39 are 20 and 39, respectively. How many protons are inc(mdluw -ayd2s+gb e /j1 u-.k one atom? (1.0 分)
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52#
 
单选题搜藏此题  
  The atomic number and mass number for caudhhj/plwv9t,kq ;o2-g.hda 24rne/lcium 39 are 20 and 39, respectively. How many u- hhdd /oaw .j 22ehg;ntv/l 49,qkprneutrons are in one atom? (1.0 分)
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53#
 
单选题搜藏此题  
  In a 93 Nb nucleus, the number of protons, neutrons, w0k8m dqrx- z*v ;ltjgeqt( s (v37ej:and electrons is 41 (1.0 分)
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54#
 
单选题搜藏此题  
  How many protons are theri v 7pcya19n4e /6mdbse in the carbon-14 nucleus? (1.0 分)
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55#
 
单选题搜藏此题  
  If an element of atomic number 15 has an0 dsrnfher pbl bzy06 1;:2c8q isotope of mass number 32, (1.0 分)
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56#
 
单选题搜藏此题  
  Calculate the binding energy of6;-z0l yae qgj $^4He$. (1.0 分)
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57#
 
单选题搜藏此题  
  How much energy is required to remove one proton fr 3iq wmdee ;/q5*fz8aaom $^9Be$? (1.0 分)
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58#
 
单选题搜藏此题  
  An element with atomic number 88 goes through alpha d:4g ; bcfyqv8tgat,cz,kg-)e ecay. Its atomic number is4g fzqct8avb ;k:-gy, )t,g ec now (1.0 分)
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59#
 
单选题搜藏此题  
  An atom has 98 protons and 249 nucleons. If it undergoes alpha decay, whm:o8 ui -xksy v,z:7doat are the number of protons and neut iy-8o :ukdzmvs7, x:orons, respectively, in the daughter nucleus? (1.0 分)
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60#
 
单选题搜藏此题  
  A carbon-14 nucleus decays to a nitrogen-14 nucleus bq;bps+ h; h9f4ye,(h gugswz 3y beta decay. How much energy (in MeV) is released if carbon-14 has a mass ogh ebhzyh (;f+3gwp ,9uqs4s; f 14.003242 u and nitrogen-14 has a mass of 14.003074 u? (1.0 分)
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61#
 
单选题搜藏此题  
  An element with atomic numb4xeybrffqblf64 iqxx;r*x.-:2i; p50 ois iier 6 undergoes $b-$ decay. Its atomic number is now (1.0 分)
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62#
 
单选题搜藏此题  
  If the half-life of a material is 45 years, howdbf -r1 rcrpe,k*s0+ ;xileh 9 much will be left after 100 yearsebrrf -lc, ;+hdxrs *ep k0i19? (1.0 分)
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63#
 
单选题搜藏此题  
  If $4.0 \times 10^{18} \; atoms$ decay with a half-life of 2.3 years, how many are remaining after 3.7 years? (1.0 分)
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64#
 
单选题搜藏此题  
  What is the probability that an atom will decay this year if its2+tr3b tz4if+bjknktr n dm(r,c*i: 2 half-life is 243i crid*2+ (r2tt,mnj:nk 4btfrzb+k7 years? (1.0 分)
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65#
 
单选题搜藏此题  
  A Thallium source was cekijut7sirj1 r -+.o z*rtified at $10 \; \mu Ci$ ten years ago. What is its activity now if the half-life is 3.7 years? (1.0 分)
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66#
 
单选题搜藏此题  
  A radioactive sample 3qy vi5j rx (olezkei2s+u8;s -7*gn 3hjge7bhas a half-life of 10 min. What fraction of the sample is left after 40 minejol* 7yzguvse2 7i;snq( 3 hex-brij+53gk 8? (1.0 分)
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67#
 
单选题搜藏此题  
  The half-life of radioactive iodine-137 is 8.0 days. How many iodine nuclen*l7f d/zr-0qljvtw7i are necessary to produce an actzvlw/r 0tl j77q-dfn*ivity of $1.0 \; \mu Ci$? (1.0 分)
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68#
 
单选题搜藏此题  
  A radioactive substance with a half-l5m xash++8vw gmx; wu)ife of 3.0 days has an initial activity of w)5;x+whv mm8gxu sa+$0.24 \; Ci$. What is its activity after 6.0 days? (1.0 分)
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69#
 
单选题搜藏此题  
  The radioactivity due to carbon-14 measured in;/8ezex)wgr/p*qh y-z 6s ky r 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 emitter, is 5730 yearg *6 w)res8p-/qzx ryk/;ye zhs. Thus we would estimate the age of the artifact to be about (1.0 分)
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70#
 
单选题搜藏此题  
  How long would it take 7xosxh a/p9z9. , zueqg g50rs5zb 3xo$4.0 \times 10^{20} \; atoms$ to decay to $1.0 \times 10^{19} \; atoms$ if their half-life was 14.7 years? (1.0 分)
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71#
 
单选题搜藏此题  
  How long will it take aze,- :lb odeq, $4.5 \; Ci$ sample of material to reach an activity level of $0.14 \; Ci$ if the half-life is 435 years? (1.0 分)
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