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PRACTICE：Physics Unit30: Nuclear Physics and Radioactivity
本Practice来源于https://webassign.org，是在线Practice的打印版，您也可以访问本平台网站(https://webassign.org/)直接在线完成(注册并登录账号后在首页左侧输入试卷号 329 即可在线作答)，，作答电子化后可随时回放，查看每题答案与详细解析，搜藏保存任意题目；教师使用本平台可以抽题组卷或一键复制他人试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力。本试卷的直接作答链接 https://webassign.org/test329.html
 Author: physics    Total Marks: 71 mks  Marks Awarded: _____________

User Name: No Login  Start Time: 23年05月01日 14:16  Switch to Whole-Paper Mode

Mark Problem
1#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Which of the atomic particlc)8 dbt9 q4meges has the least mass?

Correct Answer:    
Mark Problem
2#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The mass of an atom is+.p5f stb xnp*11pji:1datbk

Correct Answer:    
Mark Problem
3#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The hydrogen nucleus consists ou2j9v+h 2j2n tcgzrcl+s8s0m2* puhxf

Correct Answer:    
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Mark Problem
4#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  An atom's atomic number is determiq* (9 crjp. obvl4eh8gned by the number of

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Mark Problem
5#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  An atom's mass number is dfv: d.4b8li khrqs;ht 4 ,dem3etermined by the number of

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Mark Problem
6#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  If an atom's atomic number is +gqzwc40 8ge 26w(;lnd(oy 1ai chziagiven by Z, its atomic mass by A, and its neutron number bgew2z+ghic0n(1cdaq;al( i 6yozw48 y N, which of the following is correct?

Correct Answer:    
Mark Problem
7#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  When a neutron is emitted from an unfnz,b l6nf(h+ fa8c ,bstable nucleus, the atomic mass number of the nucl,f+hbc z6nn8 f,(b afleus

Correct Answer:    
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Mark Problem
8#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The number of protons in pl; 2jsw*6/cl9e1d0 fczbz bkan atom is

Correct Answer:    
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Mark Problem
9#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  There is a limit to the size of a stable nucleus b-frfzc )v w52 hls:(thik:4yeecause of

Correct Answer:    
Mark Problem
10#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Atoms with the same atomic number9 f8ij p buldgu:u)o0, but with different numbers of neutrons are referred t0u,u89 o igljd) fpu:bo as

Correct Answer:    
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Mark Problem
11#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Isotopes of an element have 6zcm:7a,oi*veh/ pr1k5 jgt f nuclei with

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Mark Problem
12#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The atomic mass unit is defined askq8xd oxfeop2o09s6xje9 0 ts*r .0ej

Correct Answer:    
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Mark Problem
13#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Compared to the masses of its separate protonmzn9oexn+5ymc: qnw/m slm5/0 /3 grns and neutrons, the total mass of a stable nucleus xc5g/0y5lmr39/+m/n nmnmw:n sqezo is always

Correct Answer:    
Mark Problem
14#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  When nucleons join to form a su-np5m ricw n4/ a;4l y0oxv66 yiiggslf(k7) table nucleus, energy is

Correct Answer:    
Mark Problem
15#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The binding energy of a nucleusgub0m /+sn8pwhf7w(k( u ha+4ojvd,g1a yi ,z is contributed to

Correct Answer:    
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Mark Problem
16#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The binding energy per nucleon;+2h;:ckgadrd c7 g sn is

Correct Answer:    
Mark Problem
17#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The binding energy per nucle51 teeu27cghq gd1zx3r1 g2ryon

Correct Answer:    
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Mark Problem
18#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Which of the following statements concerso9r(6 4a* xkf+ qicc5-n wctrning the nuclear force is false?

Correct Answer:    
Mark Problem
19#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Compared to the electrostatic force, the nuclpj )znt7pzpg2c9, m/p ear force between adjacent protons in a nucjtzgp92 p7,pm/zp )c nleus is

Correct Answer:    
Mark Problem
20#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Alpha rays can penetratdp fm 6 q c*wrshc(/)qdf 5i7fj2eki*,e

Correct Answer:    
Mark Problem
21#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Beta rays can penetrarm -e)x:rnt( ite

Correct Answer:    
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Mark Problem
22#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Gamma rays can penetrah m; /szgec67 i2enf itft2o,0te

Correct Answer:    
Mark Problem
23#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  An a particle is also76ht11d h jxdo known as

Correct Answer:    
Mark Problem
24#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A b- particle is also knowdp:r *.0 dsel 83tewyzn as

Correct Answer:    
Mark Problem
25#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A $b+$ particle is also known as

Correct Answer:    
Mark Problem
26#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A gamma ray is also kntw:4lhrhwe6 vw;ur)b2e+ka o 50mzn 1 own as

Correct Answer:    
Mark Problem
27#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  An alpha particle will be attracte8ntgk2 s.vf ej4,yv-jd to a

Correct Answer:    
Mark Problem
28#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Alpha particles have a yr)h o).bo(ihn atomic mass equal to

Correct Answer:    
Mark Problem
29#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  When an alpha particle is emitted from an unstable nucleus, the a4mcz+4)j ttw/gcb )csxc85tf tomic mass number of the+jg)84s/w mt4 ctf)xzt5bccc nucleus

Correct Answer:    
Mark Problem
30#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  When an alpha particle is emitted from an unstable nucleus,/7l*hx /iaax jz:+b4l8q icyh the atomic number of x*j/+ h y/hqc7zi b :8laxla4ithe nucleus

Correct Answer:    
Mark Problem
31#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The expression (MX - MY - Ma.v lsj-ihka7t3d n7 m1i zal.6e b+mm() x 931.5 represents

Correct Answer:    
Mark Problem
32#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  In beta decay

Correct Answer:    
Mark Problem
33#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  During $b+$ decay

Correct Answer:    
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Mark Problem
34#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  During $b-$ decay

Correct Answer:    
Mark Problem
35#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  When a $b+$ particle is emitted from an unstable nucleus, the atomic number of the nucleus

Correct Answer:    
Mark Problem
36#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  When a $b-$ particle is emitted from an unstable nucleus, the atomic number of the nucleus

Correct Answer:    
Mark Problem
37#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  When a $b-$ particle is emitted from an unstable nucleus, the atomic mass number of the nucleus

Correct Answer:    
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Mark Problem
38#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Which of the following is most x mzo:,yn a11znearly the same as a gamma ray?

Correct Answer:    
Mark Problem
39#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  When a gamma ray is emitted from an unstable ar** svcty /pwdcu 0)zzzq. 58nucleus,

Correct Answer:    
Mark Problem
40#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Which particle has the most ma 2gtkg mpl)1y7d(;bp lss?

Correct Answer:    
Mark Problem
41#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  In all three types of radioactive decay, what value is conserved in addition n )ppm8l+ 37.f1jidx sstpk 0n)fare4to electric chde)fmanp 1kx.3sl n4rit +7p 08pfjs)arge, energy, and momentum?

Correct Answer:    
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Mark Problem
42#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  What happens to the half-life of a ra k 2/zt+nry2 lfzn ;asr28mt6ddioactive substance as it decays?

Correct Answer:    
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Mark Problem
43#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  In radioactive dating, carbon-14 is often8wq oxi32q.mvx;+u - siq+9iirbdqb / used. This nucleus emits a single beta particle when it decays. When this happens, the resultin3bi vsw+2+m uo;-qqq8 xb9iqidr/. xig nucleus is

Correct Answer:    
Mark Problem
44#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The type of detector that uses a magnetic fielnfe:: (l2s mixd to curve charged particles is a

Correct Answer:    
Mark Problem
45#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The type of detector that uses lipc8;+2vl0vxt( oa*ymuy) eqzquid hydrogen is a

Correct Answer:    
Mark Problem
46#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Cloud chambers have been replaced by bubble chambers becauselwbecb8*ws ; nj3d67o 4avd9u

Correct Answer:    
Mark Problem
47#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  An element with atomic mass number of 14 and atomic number 6 has how many prny3wq1(u0wd b otonwqb1u(yw0dn3 s?

Correct Answer:    
Mark Problem
48#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  An element with atomic mass number of 14 and atomic numbew s:-c37dptw .eqa.:ilc9 roqr 6 has how many neutronssq .7:cqtd rw93:o.ipl-ewca?

Correct Answer:    
Mark Problem
49#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The atomic number and mass number for calcium 39 are 20 anbf g) saym3l* jh07 u3gk)zwo-d 39, respectively. How many nucleons are in okb*j)lougzf 3ma-73s 0gh y)w ne atom?

Correct Answer:    
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Mark Problem
50#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The atomic number and mass number f; zhcd7o /h1;bv;y7syyum9 ajor calcium 39 are 20 and 39, respectively. How many electrons are in one 9j y;v7/dy1a;bsm 7yco uhhz;atom?

Correct Answer:    
Mark Problem
51#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The atomic number and mass num n0o54pud2rlyjs/ c*uik88t dber for calcium 39 are 20 and 39, respectively. Ho2k8od *c t5ls jyi 8ndr/4p0uuw many protons are in one atom?

Correct Answer:    
Mark Problem
52#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The atomic number and mr76y jja.fx 5fass number for calcium 39 are 20 and 39, respectively. How many neutrons are in one6jyaxf75.jfr atom?

Correct Answer:    
Mark Problem
53#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  In a 93 Nb nucleus, the number of protons, neutrons, and electro xj;8oa8i(5 uglq1 yzjns is 41

Correct Answer:    
Mark Problem
54#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  How many protons are there in the ctq26annnl + l/;;1*azo yxxucarbon-14 nucleus?

Correct Answer:    
Mark Problem
55#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  If an element of atomic nuiy7 mld+0 eq6 4lu*fkomber 15 has an isotope of mass number 32,

Correct Answer:    
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Mark Problem
56#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Calculate the binding ene46h3g*eho q sbrgy of $^4He$.

Correct Answer:    
Mark Problem
57#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  How much energy is required to remove one proton from y+xhhj*eu 0;5x g 5g9;wjvdrb $^9Be$?

Correct Answer:    
Mark Problem
58#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  An element with atomic number 88 goes through alpha decay. Its atomic num+sh p-6jy5dxars-;lsber is-sdsx r; y6jl+-5hp as now

Correct Answer:    
Mark Problem
59#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  An atom has 98 protons and 249 nu,ryp k us(nn-/b3; mygcleons. If it undergoes alpha decay, what are the number of protons and neutrons, respectiveu/ sr n,-k;gmpn(y3ybly, in the daughter nucleus?

Correct Answer:    
Mark Problem
60#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A carbon-14 nucleus decays tkwxhll 78z- : *(1rzrll(yqhgo a nitrogen-14 nucleus by beta decay. How much energy (in MeV) is rex( lkzg 7r81qwly*z(-:hhrl lleased if carbon-14 has a mass of 14.003242 u and nitrogen-14 has a mass of 14.003074 u?

Correct Answer:    
Mark Problem
61#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  An element with atomr/7b t/ws ++d6lt qrtmic number 6 undergoes $b-$ decay. Its atomic number is now

Correct Answer:    
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Mark Problem
62#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  If the half-life of a material is 45 yearx xla4x*vs19rhg roy10:/db,m3ka ej s, how much will be left after 100 year rb a1rv /:1ysjxxko0la,h3g 4md*9ex s?

Correct Answer:    
Mark Problem
63#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  If $4.0 \times 10^{18} \; atoms$ decay with a half-life of 2.3 years, how many are remaining after 3.7 years?

Correct Answer:    
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Mark Problem
64#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  What is the probability that an ia0tfdj kxp39ni9 hw; *wy30hatom will decay this year if its half-life is 247 yeary tx0 w93p9 a hi;kh0*wni3jdfs?

Correct Answer:    
Mark Problem
65#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A Thallium source was certifip as:8);xgpc,cl w-pu ed at $10 \; \mu Ci$ ten years ago. What is its activity now if the half-life is 3.7 years?

Correct Answer:    
Mark Problem
66#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A radioactive sample has a half-life of 10 min. W 4 v0zh;ag/zrlwck)qm,me 7p0hat fraction of the sample is left after 40 min? ger 0w)vc4zmmpq ;/zk,hl 07a

Correct Answer:    
Mark Problem
67#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The half-life of radioactive iodine-137 is 8.0 days. How man/f.6bgou sw,*f,nj,u 9 j.mbmaoft9dy iodine nuclei are necessary to produce an a ,t sua6,dn9,.ouwgmf*fj mbj9.fb /octivity of $1.0 \; \mu Ci$?

Correct Answer:    
Mark Problem
68#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A radioactive substance with a half-life of 3.0 da/( 7 lp tjxjevj 0384mmo*;prgdx +axuys has an initial activity of mgoxj4vj u(et*pr/8jm7 ;xp +a30 l dx$0.24 \; Ci$. What is its activity after 6.0 days?

Correct Answer:    
Mark Problem
69#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The radioactivity due to carbon-14 measurec+o/4e4 kn e1 a4owhzroa/(ydd 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. The half-life of carbon-14, a beta emitter, is 5730 years. Thus we would estimate the age of the art4/4 neryc1dz+hoae(4okao / wifact to be about

Correct Answer:    
Mark Problem
70#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  How long would it take;b huh zp.,)nn $4.0 \times 10^{20} \; atoms$ to decay to $1.0 \times 10^{19} \; atoms$ if their half-life was 14.7 years?

Correct Answer:    
Mark Problem
71#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  How long will it take:p u7d5qiob;m a $4.5 \; Ci$ sample of material to reach an activity level of $0.14 \; Ci$ if the half-life is 435 years?

Correct Answer:    
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    Total:71 mks Pass:42.6 mks Duration:Unlimited
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