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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: 游客未登录  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 hax snv4u-ew0 v*s 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 i,vrjy0po; x x)s

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3#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The hydrogen nucleus codb,;1afsuq)u/ ke/uk nsists 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 d;sx -1q :aja(5zacfcthe 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 nuh216vok ykmhp9 h je0)mber 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 atonp4e) crzp f6:q6r c0smic mass by A, and its neutron number by N, which of the follow cfnrcr p4pqe:sz6)06ing is 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 unst+u:oo t-xob0o-wcx 9nable nucleus, the atomic mass number of the nuc9nbu: wx to-oo ox+-0cleus

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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 tvezkl5 av b5*0w4( gen,5mt89t ey2 qcufg 4oatom 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 si1 yqhoyq d*.d* yt.p4vze 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 neutrockcb(l:l +9g lvq(,npi/ dh vba0j( 4ons are referred to aklja+lb9 b0hv:l/4,o nqg c( (vd(c pis

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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 wir r8xq*aui)y zqv6 ;)gth

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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 definr-8ujp :u7v tst;pr) fed 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 x8hjfl 9q ,ic3aes0ji0,j g f3protons and neutrons, the total mass of a stabfc0jag 8 3eilf,q,jj0 s9xih3le 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 ,e j4fc/so+yy g5*mu,fktim 2a stable 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 con. o stc9)(qumztributed 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 *k*k12ojjl ucoa l98knucleon 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 nucleorbqho4,y)0aa*3u im m n

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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 thegli2+ j0qa4hy 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 adjut ll)lwl* ,(tacent protons )u,lw( *t lltlin 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 penete**ry6(jao 1sj yur( k1pka; *pxuc2yrate

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21#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Beta rays can penetrabn6 *figi.(( a u0jqvb9sllc 1te

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22#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Gamma rays can penetrate0n sg)wv1r/ s kf.vf.b

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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 bv,:j,jp jjy+ 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 knowzj;c r)5ku1 9a jnr8qkn 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 bed+ucraks*/y p h7mw58 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 any 5z/z pin16la 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 aij15,oe 7g4 lylhqn(dn unstable nucleus, the atomic mass number o7i y41dlo h,n(elj5g qf the 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 6z/gbg(wrqymywm- - 5;o8ow vis emitted from an unstable nucleus, the atomic number of th(--bryz m/v5 wyg6 oowwqmg;8e 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 931.5 representsd *n , lyxfa;,hhkc45p

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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 nearl),yrce8sxn )w y 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 eoad5y 3ni n(a xdf6hr*4b23pvmitted 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 p.;i ;cknb hukv .:u5g+ty:d fmass?

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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, what value is coo* bni9bb3: 2jmubpt 2nserved in addition to electric charge, enert* mbbj o2:n9ib 3bpu2gy, 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 o( :id7bo)jj xsubstance 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. 0vtbsmt va1/, carbon-14 is often used. This nucleus emits a single beta particle when it decays. When this happens, the resulting nucleus .1vma0vst/ b tis

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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)n44nggyq34 rj tr8gk 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 liqui- t9mt lyuc,m1/ufgv0k7bqa 4 d 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 -8uh wj e0xvi0(x,tok 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 nuggl:r-fe7 jro6q8-nct ,ph. cmber of 14 and atomic number 6 has how many protons,6rghtc fe-j pc8n g.-: rl7qo?

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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 neu+e3gd95u:r3 dvfj-i pzdr7xm; p 4xm v q0sri9tronv5xp mdsr-j d7; gref + 9:rmz0u3iiv p4qdx39s?

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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 nu29+a poxw:g mrrky .f2+z)lavmber for calcium 39 are 20 and 39, respectively. How many nucleons are2lx9vk2r az. fap)+ g:wmy+ro 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 calcium 39 are 20 l8n62xwv9 .lj ddaal4and 39, respectively. H94 86wadjxalvl2 l dn.ow many electrons 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 and 39, respectivelov :lc mahym19o-nj3 3y. How many protons are 3o1j9-m cvalno h3my :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 as7*v zwd)u 2:b+oxqpi+v xu*o nd 39, respectively. How many neop2v o: dz wx+ u)sxqi7+uv*b*utrons are in 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 electr j,r7+b2j yjbwfi). fer 9d* 7qjj.jprons 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 yf w,j w0qsk9tmlb6yg8 e(/8knucleus?

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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 iso -hor)4 u+af94qz5wt v si8lnjtope 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 ener )d-3q fqu1 gyo) vxb7h-kv0ntgy 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 pro 43y;z8 pk 8tdaa1gkwqg;is1h ton 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. Its atomic numbezxr ;+ betp )6c6mpz4er is no rzp6e pe)t c;+z46mxbw

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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 nucleonv h7qgs*3qe(tcl3t((xjc 8 wt s. If it undergoes alpha decay, what are the number of protons and t((c (q gqx3st7t*jw3hlvce8neutrons, 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 e(, 5c xp+ rt-:jqzbhkanergy (in MeV) is releatj +b ac:qzr,- hk(5pxsed 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 v bwax*btwrk)51q) hyk:f 13k number 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 material is 45 years, how much will j :6bvw4e -xwgbe left after 100 years4 egx wv-6jb:w?

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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-siq vle 7*r.5gr 1bv(blife is 247 years?5q*.71r bbsvrg live (

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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 certifie2 ru)a s yka5h ba91zlf-5cx3td 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 9.i*hml:-m vb .1mq)q:t jwntw,mjp s10 min. What fraction of the sample is left after 40 sj1.q ml: t),w9m vqh -nj.bwimmt:* pmin?

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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 8.00 vkp z:5:x n-x 7lypqvood6g2 days. How many iodine nuclei are necessary tx56xd:n0l:z2qo pg 7o- kyvpvo 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 substa+am(-d 7 (xc.sgh ocysnce with a half-life of 3.0 days has an initial activity of c- 7 asg+hmy .c((xdso$0.24 \; Ci$. 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 woodenk2v 3dhpxl(z k7 i ,zv n4avlfxv.(g0; casket from an ancient burial site was found to produce 20 counts per minute from a given sample, whereas the samealxiz d,37z4(;nkx2g(f vpvh l.k0 vv 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 takb ywi gz1qt db2ifq-h q24i272e $4.0 \times 10^{20} \; atoms$ 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 x5w:b 75kpjjh$4.5 \; Ci$ sample of material to reach an activity level of $0.14 \; Ci$ if the half-life is 435 years?

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