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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 han;u86q au d+cl0x:exm 5dn si5s 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 4c)-vj dw)fwi t k3/ tryd:qxk4t(d,mis

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3#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The hydrogen nucleus consistse4.gv;inl j93ldo mr3 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 nu k+ b b4xjvwxo/hr/:t;mber 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 1o+ wtbk+yo+g 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 mass by Aazn anf85 9l3y, and its neutron number by N, which of the following is corre3yaz 58a9f nnlct?

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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 h6*otq8fug 2,l-fy ha atomic mass number of the nucl*q2,f-6t ga8h o ulyfheus

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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 msj) b.3 o/a)e44 hmlxf sjy7ran 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 iuior* 3gf21c 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 nuhdy7-1/b d2ry gs 9yywmber but with different numbers of neutrons are referred to r219/sy yd hbg-yydw 7as

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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 acn1fghxf 826 nuclei 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 is defined a k u qx,10xktfg9j*be+s

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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 1. 9r0f dkslvxand neutrons, the total mass of a stable nuc0sv k9.fr ld1xleus 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, tvij o9;53x tbblys +f,c8mo6energy 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 rf(j.1 jyj*pqy(t+zocontributed 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 isp9ew +y9ki/ qr

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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 n h kubmb,l4h(s(h; ,awtxm3vi/.dfp;ucleon

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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 concerni1qk r+ y19hv2b/o hvypng the nuclear 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 nuclear forcevr. o2n( mnn7j between adjacent protons in7n2nv(o jrn .m 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 penet 5l*cnsezxwfsx vkh/8 n,,zdr23yq2 9(4ax ywrate

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21#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Beta rays can penetratiri mu s3/-if/e

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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 4vm)48 njvw2cvgcn(:d cx:tbte

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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 ash5k9gg- z,1 r sr0lgyo59mkey(phn5 s

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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 knep4 tc;- 8ficn ajuq+ 3zsj16mown 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 amiabuo , yn)d55:s4sd emrz.ymi7 z3,ttracted 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 haveo7nq v,y w2.ps*ucm1e an atomic 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 uns fj 6:vzrh-ar i2 frg+5j(yzl5table nucleus, the atomic mass number of the 26jfyli j z(g:+r-fah rrz5v5nucleus

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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 emitt+c 3m:am1js* nrjcb t7ed from an unstable nucleus, the atomic number of the nucle 7mcnjjb1 3+ ta*smcr:us

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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 re*t a7uw+ ,g0:fialwcupresents

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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 nearlyjn 6tq:h2m;+p g5y qmh 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 unsw) 2o st+ m:p kx42qk,h:rrdeftable 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 the most 3cej77omhx pwk.b+q 0mass?

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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 r xsb,b/j 3tq9vadioactive decay, what value is conserved in addition to electr,t9v3/s jbxqbic 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 of a radioactive substance as it dec u/0 p.oozk3tgays?

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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. rhyp0y4 , r4uxThis nucleus emits a single beta particle when it decays. Wh,04yp4xhy rur en 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 thash(1kj i3(id8d rn 40li3u4bpriq4bat 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 thatg( b;muw.e62 1 bokuhj uses 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 rec)b2)g c msylrg: ,fcu2 zkfk6v9jz19placed 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 atomic nln * wyl)tu-:tumber 6 has how many protons?) luw*n:ltty-

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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 neuncu6 p ,tbnuo2z896 crtroncort8n69,26 npuc uzbs?

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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. Hh4cu7jyh cl3 (ow many nucleons are in one atolcu 3h4h 7(jcym?

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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 calcidfbej2*p/5lbt5/yc(1q dfz h um 39 are 20 and 39, respectively. How many elec2el/hjtdpq /f(*5yz1b db f c5trons 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 2+wzq0i)1x*f (xqpon o 0 and 39, respectively. How many protons are in one at(0f+xq zp* w1xooi)nqom?

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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. Hga:vk2u*n- m1qorj9o* zi3btse5zuij7 m d:(ow many neutrons are ojk7zom qi9r nd z2m:j v-ugu*t315 e(ba :*isin 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, and es)/m dnts jqk95 5bnq3w(j j vh ,o9r/gdme0(mlectrons 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 nucleus55g6y (j i mbq2nndg;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 numbely-;tqcgsom vj+kv.n2n +1 m+5e;sa or 15 has 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 u e:jauqm;x+4)d h 6fwhm3.dcenergy 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 prot-y.h xg0 l3edton 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 alpha decay.5z-2gpikt6x f .zw; bn 2e7klt Its atomic number is xt7wb5 i kg6kfl ;p-2en. 2tzznow

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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 a;o 46in hvq8d)o9 3f ral(xmjblpha decay, what are the number of prot4;)8lr9o nm3i(hba6vo qdf jx ons and 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 t-g;.p 2 wi1xhr -)wipz sget+co a nitrogen-14 nucleus by beta decay. How much energy (in MeV) is released ig2-g-wecx )pi;w 1z i.+rtshpf 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 number 6 undergv u0e ,19h8dat q 4v*bli xk7itm/nz)woes $b-$ 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 is2k nj a oy.suwoo)v8qws5-9* c 45 years, how much will be left after 100 yearssvow qs9k*wju.5 o-ay no)82c?

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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 if its half-li*woow0r ;5aux fe is 247 ; w05r*oaoxwuyears?

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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 certifix87x .k-q,j,uj qqt(7 nn usooed 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 s:w4 y;6:w6xs p5p.:fa xwapjsn as /xsample is left aftjf:axpx:s as/p6x5: ;ssna y 46.pwwwer 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 isxzfhs 7qsl30)ov +p 5i 8.0 days. How many iodine nuclei are necessary t3qzx+5fs 7o livhs) p0o 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 initial activity qcmfioj(c y0/k)y9 j* of yqj9m()kjcy0oc/* if$0.24 \; Ci$. 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 f 54zamqp5 y)va 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 emitfq5 )y5a4mvpz ter, 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 l: ,u 6dj4jyi;nj bib($4.0 \times 10^{20} \; atoms$ 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 l4 lg69a*;a wwrgn0w sa $4.5 \; Ci$ sample of material to reach an activity level of $0.14 \; Ci$ if the half-life is 435 years?

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