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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 pxrx9e-+4y e(jtmtvf l1zh9*a articles 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 is4b 67bzqqx7w ;y ngov-

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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 9:unbu+er 7ek 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 numbeg 03p9dj5.uyw rfbxe; r is 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 determin(zp)j .crzu1v ed 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 i23y*j : 94afztqlzivZ, its atomic mass by A, and its neutron number by N, which of the following ist3:4iav2lyqz 9fz*i j 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, the yd,hfz3,h cje )/)b+bc-frdt atomic mass number of the nucl3dejb,td hzfh+ y-)bc)cfr /, 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 in an atozm+f+x 8. xnucm 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 ar(/b-icx:7df5 y e0m9o ql bw e(a/nzn 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 different number/ gt -wwzj9y8rs of neutrons are referred w zg8/-wr9tjy 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 wit/w * kx+djaq gde7jc;3h

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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 dk:z 8sp e+xa) ,uxe 8gqswbr7.efined 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, thgv 9hgvj7n6t .gx-9mn e total mass of a stable nuc9m-ng7hg x.t6vngj9vleus 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 nu8,(bni af:*bbwxj j fyrcf*5/cleus, 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 con*sqppeij mmga q/x+pr 11/1i6 tributed 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 xw;ui2 zfye94 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 perpvkasm*0q 3 xpwlgv9k-5la: 5 nucleon

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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 9o c*1dbje3+ dyw7slyqousi 7v*96 hjforce 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 force betweedt:avq1 h 7***mpufb wn adjacent protons in a nucleus im*qw7 *pu vd1*fbt: ahs

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20#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Alpha rays can penetr0 )6tbp tbafc ,wn(.ihate

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21#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Beta rays can penetrey* 5) +v d.gzj/( et( fo 4jy5mqibep3:oafvlate

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22#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Gamma rays can penetrate a3y9l: -bfyswf4 *paq

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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 as m30 kebgp.0m /fqqi)u

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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 knodo5s;uw/ f, rmi0ew4s 1 lu-acwn 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 wilrobkg6m bxccr o0*gke,2,7 9tl 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 massb+gsc4 f yw)n9 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 +c- kr.rdscx *number of the nuclrd -x+s. rckc*eus

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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 nucleurbgfo/ 0xt d()ccfi(d1z7 p3 ws, the atomic number of fc3tix7bdwz dp)r(0 o/ g1(cfthe 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 -p:1w9d /mwioev k /8xn MY - Ma) x 931.5 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 following is most nearly the sag-, f1uqp n;mx ;gmhfmk )b49fme 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 unstabl18t g 9su9ymi1:nct77 bg +ivecik zs.e 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 f cs a/1ga./esmass?

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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 radlak ; ps4via7p3zy *(rioactive decay, what value is conserved in addition to e3sila a*pk7 ;(yv pzr4lectric 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 radio+ f/ekh,at*y bactive 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, carbon-14 is often usxnk g xj(zq* 9 /vmny.q.7d*qph 5xyj)ed. This nucleus emits a single beta particle when it decays. When this happens, n5q* x.qqd/(*yjv xjn 7 .kh9)mxgpz ythe 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 curo2qrm7ytw -:tg)7 bzhsv4gowx, 7 sl:ve 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(qu7 :ld+wnig 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 replaced by bubble chambers becr c* .bv-xw9aoause

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47#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An element with atom.jb8h t( dypov*zu 3s/ic mass number of 14 and atomic number 6 has how many protonss*3(o phb vz/j8.utdy?

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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 atomibg5oe 0 t 9i8z-vsbh:o5yuiu; c number 6 has how many neutronbio5b;ohz: y 59-8g ivst0 euus?

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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, respective 1y-k *)8nkt*gssk w.9ktxvhsly. How many nu*s8vkt1k y) .s-*k tx 9hkgsnwcleons 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 for ca c3lr(9 ftp;eklcium 39 are 20 and 39, respectively. How many electrons are in on(pr9kct;3 fle e 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 fo,e7x*hv5 xjyu d7w 6nbr calcium 39 are 20 and 39, respectively. How many protons are dbux5jx, 7 *h7ynevw6in 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 39, respectirjv;wqu.y. ,4omyb 6rvely. How many neutrons are in one atom?j4my6bwu .v,qr ;.ryo

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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 0a(vf)ulz2 e qyx9( upelectrons 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 ctmu;c);z5z0j 9fx 6owsw.vsd2uau;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 numbe f p(ql(i; gtv+: 2)(yssebetcr 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 energy pg )pdi 463ojcxaj3i/ ypg.9yof $^4He$.

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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 -eetijq 7e 4a*r91twdproton 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 throu-n o fwa0c z8cns5(e*ygh alpha decay. Its atomic number is nzeysc8wanc0o5 f-* (now

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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 an)j kg)el uk.:ad 249 nucleons. If it undergoes alpha decay, what are t:g ak)kj l.e)uhe number of protons 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 to a nitrogen-14 nuclepu yrq.kl1,b-us by beta decay. How much energy (in MeV) is released if carbon-14 has a mass of 14.003242 u and nitrog1 u.r qy-,klpben-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 p2sea;q78 x i0kdx: 46 rn.b nfud8opg6 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 4gx u)3a u3 y ,*skcch1 -y(qtavn2-eka5 years, how much will be left after 100 year(sqethku3* agu,)y a3yn-ca vcx1 2 k-s?

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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-life is 2.w1h ry-t3w :spiv;ye47 yearyw;hy: r .1vpw3st ie-s?

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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 certiax:m *y7l ./b-u phaasfied 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. W tko2mwbv. 6g4 k9u:axhat fraction of the sample is l g6w2bvok:4at.u 9kx meft 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 many iodine nuclei8v0po. ywm ;rw are necessary to produyw8p.0 owmvr ;ce 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 initr o9j99s+,0jog7mgo9 f w9goicb-gwq v:jke 1ial activity of o0 e99vkj9sg 1qoj+9j:w,ricgwfo g m-o79 gb$0.24 \; Ci$. 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 woodjx4oeqh0mg )e1m.o9 0bd-li ben 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 aedmqo 9jhe)xl4.g-0bmoi0b1 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 tak (qcbwpz*52w j cpu7:ze $4.0 \times 10^{20} \; atoms$ 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 )o x)cjuk*dk) $4.5 \; Ci$ sample of material to reach an activity level of $0.14 \; Ci$ if the half-life is 435 years?

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