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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: 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 patypg l sp0h8+;;bfx6trticles 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 a72 :eah0i.e(y tvc dois

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3#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The hydrogen nucleus c1pr v4-yr .,d- acolosb;omz.9mkg2 eonsists 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 numj4.,qyb, t0/ vgur8kka-z v k4p/w piyber 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 dzzh9)e7 .swy-o lp uj3etermined 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 m t2bhac*/ qd gg5m0g1fass by A, and its neutron number by N, which of the following itfa qcg0 /dm*h5gg2 b1s 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 -n. jgx2y +cp/plt 1 miyrujog*i4v;+ unstable nucleus, the atomic mass number of the nucleyp o t4j lg/up2+-+cmyii*g .1 vrnjx;us

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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 ay ;rbyf5;pdj7z u(x)qtom 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 t ;ulrfnzz jbu;8s.db 4t11c+the size of a 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 numbers of neutrons a/h u65sxx7ulax p ma:d1, y xvyh)gd*4re referm*dxp/ah4vu,yyud 7 h1sg 6x)5x: xa lred 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 aqur/i: way3hpn*weep,39mb 4 28c mowith

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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 defivc 2i,cy wi3dtb+.om6ned 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 itclnz399vr 2(ac3d pb js separate protons and neutrons, the total mass of a stable3rablnd 2 9 cp(jz39vc nucleus 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 stabiowei; dz-.w 9le nucleus, 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 contribut kyndl4*0sf*jed 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 nup44pg 6rqclf 7cleon 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 nu uher72yx4tg ft4 f;(ocleon

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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 conr9 91p3e mfx*m uv -*gsungygd394e jhs0cig-cerning 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 forces49qfpjv yr 4 4j6k*no, the nuclear force between adjacent protons in a nkvo4 ns6*jq4 yrpj f49ucleus 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 penetrkytp-h vn (o/e/h:ayip/b p2n s* r)k6ate

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21#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Beta rays can penetrat (19,o: ub8dme*tn kbbqysg-se

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22#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Gamma rays can penetra0jw-s/bfcetyr -6l; du y 2kg+k c:t)wte

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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 kyfeo*o7p -98r krxfo*nown 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 knoe7cdh* i,s-5z scqq7sb,m 8 7*lhctudwn 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 attracted to axpk0le2m s79+mdnu7 elc(8on

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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 /du;zt ihzzi/7z0) tnmass 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, tlf,6 oen s9.(jieus,l he atomic mass number of the nuclses,fojin96(el,u l. 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 ix ,/k1c+o jdyrs emitted from an unstable nucleus, the atomic number of the nucl ocx jdk,r+1y/eus

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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 representuq*vxtbq*-/( o rt72:ygrw 1ur pcqn3k4l,dr s

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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 same as/ :3y-dsmhl sq 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 emittedtj*cyes 5a ;k6 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 the most mass?ic s,.ohkwn./

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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 radioactiv3u+gmnvb11 d+ (mkkcm6 fm0kfe decay, what value is conserved in addition to electric charge, f c(b 6v3+k+mug0 dkmmmkf1n1energy, 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 radiaveob79,b6 yk;zuw vr 495v knoactive 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 used. This nucleus emits a single e9hq73to-w 4fmr 5ciybeta particle when it decays. When this hapr-ym 7t cowqih5 3e49fpens, 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 chafm3kdlq*8 k6bu f2f(zrged 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 hydroji36s-fyzxj5repy wq (8* ( ohgen 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 lynq0qy: 5o4e ;/kdl q-ku) gfren:l)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 atom+c vks.+qapq9 ic number 6 has how many protona+kqvp .+sq9 cs?

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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 ma)w) plvg ,e( y56eqoiass number of 14 and atomic number 6 has how many neutrons?l,i())o 6 vewepqy ag5

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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 calc3r-ek hzs0 )i3nrw( ik o9rz)iium 39 are 20 and 39, respectively. How many nucleons are in one a-(rnr03wri)eik ih zk 9zo)3stom?

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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 fok 3/jb.dsqh/h mjh5b /r calcium 39 are 20 and 39, respectively. How many electrons /jb /h.5hjmdbkqhs3/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 m79ygv j7 tsn p;w-0yqpass number for calcium 39 are 20 and 39, respectively. Hpspv y gt9j77ny 0q-;wow 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 are 20 ct9mc vzlw v +2xh58)eand 39, respectively. How many neutrons are in one atomhctcxl)9+m e5vv2z8w?

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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, hx8q/a( h cv;qf )i)f1nmb/lh3 7pzbrand 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 th1yoiuc- 2w:u oere 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 number 15 has an isotope oht4u 3gf9 ) -h2:o.gldnnfa zsf 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 enervb(u8tc mf-,73ns mbqgy 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 proton from sjb-, uv9vz5hjfs3 ;cd ijhst7-9vq2$^9Be$?

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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. Its atomic number,zj)w8 ohsq;dci lu1ix1t3h , is n1;hq1 ,tid,8z xhuj3w i)clsoow

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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 , pi.zad, z adt8v)t8 6yeuxp6undergoes alpha decay, what are the number of protons and neutron) 8av,tu,zep p6d.txd i86azys, 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. How much 0iluhh f65kd*energy (in MeV) is rh56 *d 0fuhklieleased 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 nmvm 6x; s8sda.,(rcs qumber 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 mce2qk2nh0 *-y;(md 6 gytzxs+ lu8s imaterial is 45 years, how much will be left after 100 years?;t2k0y6zl +qm *s2-mng(8s eyhi cd ux

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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 al d+kz5/4 w-)j yoyi(gqss-i zn atom will decay this year if its half-life is 247 yealq4zo sy/j yi)zk-wsd-g+ 5( irs?

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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 certified at h avrrxoe1.z0( n8 vp1$10 \; \mu Ci$ 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 th+j;ou8pm7xqk - vf9ezo:z 6tl e sample is left after 40 mi7m69-qe ou 8kto:flzjv z+ p;xn?

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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 radioact(mq9,qv c2 fehw,f msgw1)*ezive iodine-137 is 8.0 days. How many iodine nuclei are necessary to produce an activi qe *fm9,(v2w1fhcs mwgz,qe) ty 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 activitd mz:e;5u 2mfxy of x;fd:e2zum m5$0.24 \; Ci$. 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 i6qy z1 1kem2ymn a piece of a wooden casket from an ancient burial site was found to produce 20 counts per minute from a given sample, whereas 2z1y6m qm yk1ethe 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 tak qlxd0v.lg-px.bv )8a 28rnzbe $4.0 \times 10^{20} \; atoms$ 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 a62x:.;rnj qtyk.apm r $4.5 \; Ci$ sample of material to reach an activity level of $0.14 \; Ci$ if the half-life is 435 years?

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