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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 partica -n;-.s. h6 eq ;airxpltgaj,les 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 isjgim1ux ) ymajlwr00; w*q*w8

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3#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The hydrogen nucleus conshjydwj8p xmr*l- -r.nl 0 9uyi.t;as4ists 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 i r)2t-uj.tnd02t+rj je otg7js 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 determined by the numbzqn0ah i*42cq y;bse(er 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,g2.m(*bas qwv its atomic mass by A, and its neutron number by N, which of the following is co*wg a. s2mbqv(rrect?

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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(n8 ctaum,wx. from an unstable nucleus, the atomic mass number of the nucln.,wamx c u8t(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 9yw kt o:, (w*xg.qnp03qddhuan 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 g b;lxf+/3+egg3 vibs4: nq (fnyd ai,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 wit. qjys, *jimrph42 ,pth different numbers of neutrons are referr rip pj*4,.y2m,sqh jted 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 nucl su:):cd(*h h.sdqsf 3urs/emei 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 isozk+0mzk,a yh1 rov 6*(yw5p f6wwru2qb33g u defined 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 of1 w2er7gx;u(lcro , cu its separate protons and neutrons, the total mass of a sta u c(w72xrl;eguo ,cr1ble 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 stable nucleus, enermi ;h09xn-f yvgy 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 contribn5 tl 33bka.x86 erlleuted 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 pe:8gi6 ph5bpo df(1j )4ltmjen r 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 nucl ug+lrcufc04 jh q,2w;eon

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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 qw5tk8+or5 cek.xepb+-a8 yl -x 8lbrconcerning 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 force between adjacent proton v co6lxu: * /cmcp(kw;mukz82s inx p8 c2cmlkkuc*m;vwo /z(u:6 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 penetrav+ vwd1cved 3xnhv.ba6p;a . 6te

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21#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Beta rays can penetrz -vq6 3a7tnqo1g3wmf-pqj8k ate

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22#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Gamma rays can penet +;dys/h.,szu/ bs eqsrate

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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 alsek*zx:,5 mmuy o known 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 r/ m/((txjvihknown 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 attr,+qoqr2gn*yidv. b9ra p7 x2oacted 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 atomn0,h kfo0qrfqqy 0eb3q -k12tic 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 unstable nucleus, the atomic mass numtgp usugfuq e14b,ky d2.()u2ber of theuue)ut.s , k2q42fdy gbupg (1 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 frommghe(jh2uypi . l1;i : an unstable nucleus, the atomic number of the elu( ;j.hm:2gyhi1ip 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 93brjwgj 02bcmg1 . q33z1.5 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 mo:s+ qk)uc9gr .6zfzkf st nearly 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 unstable nucle:w+ d kx jqnu8,t)*wcpus,

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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 m p5 )unte:hj+nost 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, .f76o nsrzb4sx-c6a8yxmt qr4 t:h3d what value is conserved in addition to elec64ar4. osrd-hzmxbq8 3n6:st7t ycx ftric 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 substanp/ jz+urf f:.wce 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 nucleucv rz;3ptz(c i/tj36qj 5om:js emits a single beta particle when it decays. When; /j 3qtzcz3 jcjiompvr(: t56 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 uses a magb7h knz n+:jg2 ps8qo)netic 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) x9w7oqicg/z) 4maxfid 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 chambergx +vfbq.o9meq: .rp-3q6,+rhxljs ss 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 9xm70 a8,yrworualj o1y04 mknumber of 14 and atomic number 6 has how many protonow myux 1l 0k98ay47r amjor,0s?

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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 neutro 0 :g u((gttel;h zp,3zacqbx3t(x z3lu(qba;,0 3:g et hpgczns?

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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 cali4o l** frkumhbzjz*(d;l2s )h;f uj ;cium 39 are 20 and 39, respectively. How many nucleons are in one atomuf)sjkl;;d 2 *mr*ub(h l *fh;ziozj4 ?

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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 maszhs ,ymzykt/3h)e9 y,/8sc fov9rh 1p s number for calcium 39 are 20 and 39, respectively. How many electro8oy3,e,h/fh9m pzvyz19/syt rk)c shns 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 andiifx8auh lgj*9fml 74g +xdr dh5d-g)c0 9)x r 39, respectively. How many pro+ c9 ixaijg -5 f )dhrr9g7d04fx*mgl 8uxldh)tons 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 andso:4 m-c l(v 5omytcyn4f1umd 0g4*sj 39, respectively. How many neutrons are i1sg l5jy4ommv44cc 0(*n-tmy s:do ufn 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 numbernax,dw0 :j)6yucbh ( puy/v x3 of protons, neutrons, 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 car*/2tb qs x-yehbon-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 h a:2(tdpqn:r l8(lz jg aqra-1as 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 oun8hvy5 o+gh . t44x2cix z(cbf $^4He$.

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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 lu5n- he5i7qot pa55ok7w 1/j 9cowtpproton 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 numberqo+7szqivoplp /:1m ; 88 goes through alpha decay. Its atomic number isv op/qp7:loi z1q;sm+ 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 and 249 nucleons. If it undergo e i;9 js/9mooasmmhy0u9s-y2es alpha decay, what are the s y/oe0mmis- j92;9h9o msyaunumber 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 nucleus by beta decay. How much ener) oqgpybi kuz4rv/+- v5gf9 w,gy (in MeV) is released if carbon-14 has a mass of 14.003242 u and nitrogen-14 has a mass of 14.0,wr)f+45vbvz9 k pioy-/gqg u03074 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 undergoesp, fvi uvj)opkgm/(12 $b-$ 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 lygx2qym6 sa l/od3ee f.9-v/ueft after 100 years odlgyf- 9/./ee qus2mayx36v ?

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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 24l;endf3/ckx( rym9eal,qcn6z( 5 d( j 7 n9l ( r(mecq6 cka( yen3l,f5;jzd/xd years?

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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 ax6( ivva8,c4 ubtwjv ,t $10 \; \mu Ci$ 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-liif(0)qzifn21 gpt ta3 fe of 10 min. What fraction of the sample is left aftigf0 p)2( fztan i1t3qer 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 8rg i4a 0(24uh+nxs yaj.0 days. How many iodine nuclei are necessary to prodsnai rja+gu0y 2(4x4 huce 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-lifh1.bt 9 vrrhwi5l*w:k e of 3.0 days has an initial activity of v5tih9bh:*r lrw1w k.$0.24 \; Ci$. 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 wc qso yre*i1x5s;i;i8oks ,:n:zyab /;7fk sin 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 emitter7qnew zkbss is; a,sf:;15:kyoryc ii */ox;8 , 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 cfcs7:zo9w;u b8mg g0e $4.0 \times 10^{20} \; atoms$ 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 oykh5y1-xd*6ajb )r e$4.5 \; Ci$ sample of material to reach an activity level of $0.14 \; Ci$ if the half-life is 435 years?

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