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习题练习:Physics Unit30: Nuclear Physics and Radioactivity

 作者: admin   总分: 71分  得分: _____________

答题人: 游客未登录  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 least z:z6b x462)q fqkbxe91w(h o gwhpwz2mass?

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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 is.2c7rafd-,roey fxnq :,x i8z

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3#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The hydrogen nucleus jx1si(ufe n3+ xqr.m,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 n yq8(r3vm:8zhvl+ 0esr ;v bae6uh/4nbmnp) bumber 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 the numberzsa knqt *un+0j4 b 7.d77hijd 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 mass by A, and its ng)* 5*xxlwq ms kktcm+3ius1:eutron number by N, which of the followist: +iq5 u1w3 clms*xm*kgx)kng 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 nucleus, th1 .g 5x92behl0hql7 yg zakcj/e atomic mass number of the n5q /gy jg2e.l zka 7cl0hh19xbucleus

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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 a4ckjj/t9w/ tf8ozu)w n 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 o-ea :ptx*a f.y7e w9wnf

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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 nm+95 uapf1tnko0(qio 5l cu. ceutrons are ref9uc5pi ma1t qf(olk 0u c+n5.oerred 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 wi nscy8te :8dc8th

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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 defi0gk7 vfnw4uf .5q44pz r1 quqhqy:mc*ned 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 andyd5i) 2gs b jjl2g.yu3 neutrons, the total mass of a stable ngjb2diy)yu j.2g3s5l ucleus 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 nucleuscow7ioerxwq:/+( o4r , 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 crsbzx6 h:yo *o65g4yr(i1a jc ontributed 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 +z6q8 val)somhv59c(/ddqz u nucleon 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 nucleosza9bhf -5.j )wlro*j n

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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 nucleub qlfxz/ odr2g:h-uf- (:y*t ar 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 nucl0x0mb.ocnpxl xw,5t xov -q05ab;0 rdear force between adjacent protons inw;5x px0aln0 oxtvb-rxd0m .qb c0,5o a 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+auwm9 st u;m/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 penetrgf f3h s(.m,f8vmw .uxate

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22#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Gamma rays can penet5whkj7x3kb, 5c5pq yz.rem 0grate

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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 kno nzlnsj+1 72oqwn 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 kn7)yh4 jig+mqjown 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 wis, xhs3ai3 734 fpb)vf0iyjvu4xk h9 rll 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 mass e+61 -p mg1tsa hclpuu2881:muyl rqyaqual 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 9p /9txz fms2fis emitted from an unstable nucleus, the atomic mass numbtp9x 9/mz2 fsfer 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 frs5 h(m7)0 x,bhtg xhnwom an unstable nucleus, the atomic number of tw,( )hsx x h5bgmn0h7the 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 931.1qluroc2l : a04d;vy /hxek3n5 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 ni ,:6ab f; wt+uw2bwhqearly 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 grsr 3zu:t.f* from an unstable nucleus,

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40#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Which particle has the30l 6(b etc6ymjrg(7tvsz/ zh 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 radioactive decay, what value is conserved in addition qkxe4 sj,n 52*ay/odf pe*vc3 to electri *kea2ydn3vq j/5p so4e,x c*fc charge, 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 o u 8iuqt2)yw2 j7i i5;ia1duhwf 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, carbonla::v24koi .w 8;qwi+ar j d0rqqqf *i-14 is often used. This nucleus emits a single beta partj qqi:4 d;oq2wfw0i.a*rqk rl:vi+ 8 aicle when it decays. When this 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 usesxqj kah ,)3u-q37orlp ,tsg pv,x pr;- 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 uses liqu- 5iy nmegvof c/1s51wj( z1jqid 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 replac roa0r 8i7uzm9,ujpn)xc 3)wged 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 atomicja3 ,5 5 fb)u-zs)e xbfu0rirt number 6 has how many protonsu x)jarf0bi te b5z-fs3 r,)5u?

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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 neutrov+ad o wf2vjkelh d c)kw79fs,p )w274ns?ds))2 wfvd7o+p9, fcw7h 2ae4kwj vkl

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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. 01ja/i-mr uqw0u s(ouHow many nucleons are in one atom?(u-s0ju a0 /wqoirm1u

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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, respective,dr1 r3 .klagbly. How many electrons 3.1rlrkgb,ad 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 39,9dnz m/ol qgm;r2-k d. respectively. How kdqg;z/.n2 r9d mmol-many 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 l1lx++rjx k6p3xdn -iare 20 and 39, respectively. How many neutrons are in one ad jxnlpi k-+3lx61+xr tom?

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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, ne3mxk4jzc 05f l)c1 xoao6yc9 ;( runbmutrons, 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 carbon-14 nucleu 3w lqm1)holiccq-2 *rec dx(*s?

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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 a nse6,4f;ru5 k bq6vp 5/qpvcxim2;du n 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 bindingmj38 0o(epus+yh fdc* n+wwc- 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 remove one t21 g-hq 7twymproton 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 go,ls wlrww :a20 b4igw4es through alpha decay. Its atomic number is now ,ri:sw4wll 0g2w4b aw

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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, whit)vob4 3 sn+gu *b8jdat are the number of protons and neutrons, n sbb*i u4o)jtv 83+dgrespectively, 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 deci*c :m5,n 6lh 1xdgjp42l ws8ke,yfymay. How much energy (in MeV) is released if carbon-14 hac2ipl4 h8j 6sywf1ml*xe:5m ,nk,y gd s 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 +0*j)chbqcu0bk4lorh :a3)t ocwo( b 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 yem) equcqgq2.e/u ;s v7ars?/g;e2vq7)c q . suemqu

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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 at9 581c b-khuiyvh* jupom will decay this year if its half-life is 247 ye1bk9yju -hihup*c58v ars?

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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 certiq 8rci9 kzex28e2(sbd fied 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 j9gjgy lk /2v 9gmc+o/the sample is left after 40+gg2gkl/9m o yvjj9 c/ 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 radioac8rlw-hx8lwoyo ;czluu 33s-/ tive iodine-137 is 8.0 days. How many iodine nuclei are necessarysx8or u l h3/-zu 8l;owcyl3w- 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 halfniyhi ( n1el*z7tmy *8;h,bdu-life of 3.0 days has an initial activity of * ;*8ny (,1lmud7heynib zi th$0.24 \; Ci$. 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 dued/ togysny.mjb++*k fj,q;dv25 :qx+ k svu+k to carbon-14 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, w2yx.ybkd*j; g+nsm:qj 5kf, dv+uk vo+qt+/shereas 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 takkc*7rf / gk/wp+u)wt7pbe vm2e $4.0 \times 10^{20} \; atoms$ 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 c p7udpd rt60- eou6a0$4.5 \; Ci$ sample of material to reach an activity level of $0.14 \; Ci$ if the half-life is 435 years?

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