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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 the leasl ke/7m4z, e j,s.cxg o(zt)bat 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 isudbr g:4k)u1- ammepgdb:/h +

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3#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The hydrogen nucleus 12ay h3wf+1 oy7 su hg5cc+,k7oaodgu consists 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 num( uxfh,1 -hfczber 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 determu dk w,dc;g+i7ined 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 mazj*qb6ta-d q :ss by A, and its neutron number by *q z6t-dqajb: 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 from an unstable nucxw sg:6 qu3c-, c(mjblleus, the atomic mass number of the nucl uw3 xclc:qg (jm6b,s-eus

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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 i4-b hl zck1v.yn an 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 fw j3:ar6kfk+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 differenj)d-tw2tls bn+c.h abp)y8a:t numbers of neutrons are referred to a) j.lstaw8a:htb y2 pd+ -cb)ns

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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 nu4.4cijn---brv wlk tnclei with

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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 e.s gu,w-*kzav .n;:j:ox/js.to ijkis 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 a01e0 s:ingm( cxzf3)*md gw4apdo-cmass of a stable fan0* csx(143d)0 -: zegigwma cdmponucleus 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 nucles+)nwsza * +m0+padpng3/oprus, 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 contripb:2wn) c vpw2cen*-c buted 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 o-qnl8. tgitry5 38 xhis

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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 nzbc(+zvm*2bwit)1 znucleon

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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 nuclear force is 7txx/4gso ih9 4te my7false?

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19#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Compared to the electw09i:gg fv)dt rostatic force, the nuclear force between adjacent protons in a nucleus0wdvgi : 9fg)t 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 penetratej* qls1lmia2,ms wz) u+aafn f5rm 88w:nao*2

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21#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Beta rays can penetra:pwyi+ax-1a8e r em q1te

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22#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Gamma rays can penetrba. /vcluep kd;5x2 k:ate

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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 knownoifyk)l5+r1qx 3wc v9*(hhcm 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 kn- ; s:k qqkmyyj)x(q+v ,8iisaown 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 becy qs(.4,gphaj wz74 e 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 mpk7x 2gvzq 7 /an6; +g(sxqpkrass 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, the atomic mass num6 xb sx10ub*o6 4kspykbeyu0kxkss4b 6o b1 *p6xr 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 emitted from an unstable nucleus, the atomic xvzsy ffh(2;rayr0(r1ox59p 8 w nk:qja (r5bnumber of the fphr1x zj95y:8;s( rf(v2 0nbkxqya5o (rawrnucleus

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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 93 3aerpl1la5b ;1.5 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 followings19*txrc 1 tcn 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 n2+et f .leng3hucleus,

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40#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Which particle has thep*x-b,wq0 8 lo- hy6ny*ehf fo most 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 radioac/t (nle8p z2mi. ;v)9nh tebootive decay, what value is conserved in addition to electric chargee b2.totzv9eh o)l;8 im(nn/ p, 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 a radioactive substanc.uwcu )n92 -mnve/53rwacqzle 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 nucleus em.et;mq: umgy. f0l s8fits a single beta particle when it decays. When this happenq s.yfu:0m; ftm8 lge.s, 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 charga drnb 6f*6nf.tfed9 9ed 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 hi0wo0.yosr 6mk7dts. 0os /blydrogen 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 replaced1r;aj/cz6c; , 1bp fp ucqel6h 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 14uv5(f s/3lv ol1nbned;u.t o* and atomic number 6 has how many protonne ;s*l (v5no 3vou dfub1/l.ts?

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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 numb- ngtgq/qyol 52zf a3.er 6 has how many neutrons 5 3-/y 2q.nzfagqgotl?

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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 arzvsuk4j *)8 cne 20 and 39, respectively. How many nucleons are i4*uj)vc k s8nzn 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 canj6r- -hii2,er qg1xzlcium 39 are 20 and 39, respectively. How manr1ghxn2z r,-qie -i6jy 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 a2i8py -;at) lxggeg ff siak-naq1/as9,7 h+qnd 39, respectively. How many protons are ,/)nfgyi aalxik ;qp8g - 7q29f1 ea+g ssth-ain 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 3wza8 2c69hv0agjgnz -erv, g89, respectively. How many nn gg8zae6c h09,2 -vrv z8gjaweutrons 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 number of protons, neutrsl6ao12tpn5( y pft(hons, 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 x0mue3) k2pz(p3xet dcarbon-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 3k0n6cka3 w y/h2,

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56#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Calculate the binding ene2 ;,z;vyee k8-+3tg ncm78n4 k-drm uhtxzbfxrgy 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 protkq)cb k.1,qih h5)jbi:z(bnep9ya o;on 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 alxi5cme8 lr3ng;d 1o62fox pa 1pha decay. Its atomic number is ig1x ;c3ond5 1opar fm862xelnow

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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 nucleongf+7x0-tsh4 otemdos 200o 8tbb. ejz s. If it undergoes alpha decay, what are the number of protons anddm 402te -oft0 s78ojebt hbxz0o+g. s neutrons, respectively, in 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 decay. Hogs 1x0wsx y r+a64td;xw much energy (s 1xwa 6tsg;xr4+y0 xdin MeV) is released 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 atomic num1 :/kh vo .zs)tlll4uhber 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 m 05vxt.qnozj1 +xvq0kuch will be left after 100 years +.x ntqo5qjz00v vx1k?

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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 atomy*8 .lz7cwq+wg aud5njbo8u 0y5jc)h will decay this year if its half-life is 247 y+guqy0dl 8hw*55wc .j juan 87 byzc)oears?

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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 certifie,irfs hzf e7.d 2hdcs-4fr r;1d 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 fraction of the sampjk( n2nhe k 0es)-zwriyvw g*l25lm 3+zd4h)yle is left after i(e l+23h5s4njd )- v*rwne2yk wm)kzhlg0yz 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 iod1: e:/kfg imvoine-137 is 8.0 days. How many iodine nuclei are necessary to produce an activitfeo1mi:: / kgvy 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 d ybt07c, s*dc2dfy+u tays has an initial activity of bu0c +*ytst2dy,fd c7$0.24 \; Ci$. 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 measu 0ta mr0/17bgv/-dv )psevrb4idj c9ered 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.0ddb4)/-priemrgb0ts 971cvj v /ev a 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 takev:lv:yc )d lp8 $4.0 \times 10^{20} \; atoms$ 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 s n/ v9dj674iuct)pud $4.5 \; Ci$ sample of material to reach an activity level of $0.14 \; Ci$ if the half-life is 435 years?

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