Physics Unit31: Nuclear Energy and Radiation

?作业考试练习?通用国际物理?Physics Unit31: Nuclear Energy and Radiation

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习题练习：Physics Unit31: Nuclear Energy and Radiation

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单选题 ( 1.0 分) 切至整卷模式搜藏此题

When a target nucleushiom)d-lj c3+ is bombarded by an appropriate beam of particles, it is possiblel+o3 h j)d-cim to produce

A. a less massive nucleus, but not a more massive one.

B. a more massive nucleus, but not a less massive one.

C. a nucleus with smaller atomic number, but not one with a greater atomic number.

D. a nucleus with greater atomic number, but not one with a smaller atomic number.

E. a nucleus with either greater or smaller atomic number.

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单选题 ( 1.0 分) 切至整卷模式搜藏此题

The mass of a proton iy2k:/ o4v1 easu)jmgf s $1.6726 \times 10^{-27} \; kg$ and the mass of a neutron is $1.6749 \times 10^{-27} \; kg$. A proton captures a neutron forming a deuterium nucleus. One would expect the mass of this nucleus to be

A. equal to $(1.6726 + 1.6749) \times 10^{-27} \; kg$.

B. less than $(1.6726 + 1.6749) \times 10^{-27} \; kg$.

C. greater than $(1.6726 + 1.6749) \times 10^{-27} \; kg$.

D. any of these; it depends on the energy released during the capture.

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单选题 ( 1.0 分) 切至整卷模式搜藏此题

In a nuclear reaction, what value is conserved in additi jzb.)3 hn6rixse a;:con to electric charge, energy, and )izh3:r 6ancs j.; xbemomentum?

A. atomic number

B. neutron number

C. nucleon number

D. none of the given answers

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单选题 ( 1.0 分) 切至整卷模式搜藏此题

A proton strikes an ox.mm( (ywpsw5l ygen-18 nucleus producing fluorine-18 and another particle. What otheylpw. w5 s(m(mr particle is produced by this nuclear reaction?

A. a neutron

B. an $\alpha$ particle

C. an $b-$ particle

D. an $b+$ particle

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单选题 ( 1.0 分) 切至整卷模式搜藏此题

A nuclear reaction is said to be exs ptr1kt( -te0czb r(:othermic if the total kinetic energy is

A. less after the reaction than before.

B. equal both before and after the reaction.

C. greater after the reaction than before.

D. zero after the reaction.

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单选题 ( 1.0 分) 切至整卷模式搜藏此题

A nuclear reaction is said to be endothermic if the total kinetic energ:fqx93+ i(igc,g/ wwc0 a wrywy is

A. less after the reaction than before.

B. equal both before and after the reaction.

C. greater after the reaction than before.

D. zero after the reaction.

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单选题 ( 1.0 分) 切至整卷模式搜藏此题

The process during which a hdu) gk-vb( l-heavy nucleus such as uranium splits into two intermediate-sized nu l(-gk- bd)vuhclei after being struck by a neutron is referred to as

A. nuclear fission.

B. nuclear fusion.

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单选题 ( 1.0 分) 切至整卷模式搜藏此题

The process during which small nuclei combin2wq ge hap/20qe to form larger ones is referred t /qehwq2p2a 0go as

A. nuclear fission.

B. nuclear fusion.

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单选题 ( 1.0 分) 切至整卷模式搜藏此题

How does the total mass of the prok-.9nb29z7ob:u t-r xmkufekducts of a nuclear fission reaction compare to the ma9z.re b9 m 2nkx:kf ouk-tbu7-ss of the original elements?

A. greater

B. less

C. the same

D. varies according to the reaction

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10#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

How does the mass of the products of a nuombr+ b6ais 60clear fusion reaction compare to the mass of the origi+bas r bi606omnal elements?

A. greater

B. less

C. the same

D. varies according to the reaction

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11#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

When light elements such as hydr e *gc)cm 7(jshcy0d3aj2r(guogen undergo fusion,

A. there is a loss of mass.

B. there is an increase in mass.

C. there is no change in mass.

D. electric charge can be annihilated.

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12#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

The fuel for nuclear fiss)( egkm6 afn(bion is

A. Hydrogen

B. Helium

C. Uranium

D. any radioactive material

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13#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

The fuel for nuclear fusio8; 7mag lr-)67+ raora1r xuevdpxbj)n in the center of the Sun is

A. Hydrogen

B. Helium

C. Uranium

D. any radioactive material

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14#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

The energy radiated bn0yr hbho0lkq;k.,-hy a star, such as the Sun, results from

A. beta decay.

B. alpha decay.

C. fission reactions.

D. fusion reactions.

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15#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

What is the source of the energdb e1 gc8e hv*6ntri3nr7pi+ 0y the Sun radiates to us?

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16#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

What is the principle difference between a hydrogen bomb e e3lsuirtkmp6fh m ;58n*+b+and a uranium bomb?

A. A uranium bomb is an atomic bomb, and a hydrogen bomb is a nuclear bomb.

B. A uranium bomb utilizes a fission reaction whereas a hydrogen bomb utilizes a fusion reaction.

C. Both work on the same principle, but the hydrogen bomb has a higher yield.

D. A hydrogen bomb converts mass into energy, whereas a uranium bomb does not.

E. One results in radioactive fallout, and the other does not.

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17#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

One sometimes hears reference to a "20-kiloton" bomb. a 64ma9wtvti 1ua;em8 What does this mean?

A. It means 20,000 tons of nuclear explosive is used in the bomb.

B. It means that the number of "fissile" nuclei is equal to the number of trinitrotoluene molecules in 20,000 tons of TNT explosive.

C. It means that the total weight of the bomb (not just the uranium) is 20,000 tons.

D. It means that the energy released by the bomb is equal to the energy released when 20,000 tons of TNT is exploded.

E. This refers to the maximum pressure generated by the bomb when it explodes.

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18#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

What is the meaning oh nj;m2 7i 1th,7)s,nfbf radnf the term "critical mass"?

A. This refers to the mass of the "critical" elements in a reactor, i.e., the uranium or plutonium.

B. This refers to the minimum amount of fissionable material required to sustain a chain reaction.

C. This is the amount of mass needed to make a power reactor economically feasible.

D. This is the material which is just on the verge of becoming radioactive.

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19#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A chain reaction canl teqty i/-1x gk7d17y occur

A. in any uranium core.

B. when critical mass is reached.

C. in the center of the Sun.

D. when the coolant is too hot.

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20#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

The chief hazard of radiation damagk /dg2h o9315dzxjj5z t1yczge to living cells is

A. due to ionization.

B. due to heating.

C. due to the creation of chemical impurities.

D. the creation of new isotopes within the body.

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21#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

What is necessary to stop beta par+1ccybqa czzj z2; az lbt4v::bw7+5p rl; gl.ticles?

A. air alone

B. paper

C. metal foil

D. thick metal

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22#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

What is created in pair p 3kj6.fn 1:(7t msyzfudud+szroduction?

A. a proton and a positron

B. an electron and an antiproton

C. an electron and a positron

D. an electron and a photon

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23#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

All of the following are units used to describe r:- vqeio:ugpt8ucx04 adiation dosage in humans excepteuox4c8pqi: g- t:v0u

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24#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A unit that measures the effective dose of radiation fu 3 ph8gmh c.rb78.wuin a human is the

A. curie.

B. RBE.

C. rad.

D. rem.

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25#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

When lead-207 (Z = 82) is bombarded with neutrons, it 1i.t5 -qq tcube,i4yican change into

A. lead-208.

B. lead-206.

C. tellurium-208 (Z = 81).

D. bismuth-208 (Z = 83).

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26#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

In the fission reaction /-cz1* qk k wpx to8p5m6hnq-c$^{235}U \;+\; ^{1}n \rightarrow ^{141}Ba \;+\; ^{92}Kr \;+\; neutrons$, the number of neutrons produced is

A. zero.

B. 1.

C. 2.

D. 3.

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27#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

Complete the following nuclear reaction:x1qk,zj ;u1hhepy)w * $^{16}_8 O \;+\; ^1_0 n \rightarrow \;\;\;\;\;\; \;+\; ^4_2 He$

A. $^{12} C$

B. $^{13} C$

C. $^{14} C$

D. $^{15} C$

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28#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

Complete the followinkm1z3vm9)cot g nuclear reaction: $^{16}_8 O \;+\; ^4_2 He \rightarrow \;\;\;\;\;\; \;+\; ^{19}_{10} Ne$

A. $^1 p$

B. $^1 n$

C. $^2 H$

D. $^3 H$

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29#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

Complete the followingfb70, jf5uhk jjisn ;5ncfyicl 3 c66. nuclear reaction: $^{38}_{19} K \;+\; ^1_1 H \rightarrow \;\;\;\;\;\; \;+\; ^{38}_{20} Ca$

A. $^1 p$

B. $^1 n$

C. $^2 H$

D. $^3 H$

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30#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

Complete the following nuclear reaction ioul zh)e:89ukx:soz+e.z)t: $^3_1 H \;+\; ^3_1 H \rightarrow \;\;\;\;\;\; \;+\; ^4_2 He$

A. 2($^1 p$)

B. 2($^1 n$)

C. $^2 H$

D. $^3 H$

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31#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

Complete the following nuclear reaction:cwvh/e.gj r93in 0:suh:+ x zm $^{27}_{13} Al (\alpha, n)$ produces

A. $^{28} P$

B. $^{29} P$

C. $^{30} P$

D. $^{31} P$

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32#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

The Q value for a particular reactionks1q ecaajm2d3-+;qr is -2.4 MeV, and the reaction's threshold energy is 9.60 MeV. What is the ratio of the mass of the incident particle to the mass of the statio3+d 1q2qrkmsej-c ; aanary target nucleus?

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33#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

Find the Q value of the following reaction: 8) 4z6 bj6b;wefxjpiy a)kc2v$^{14}_7 N \;+\; ^4_2 He \rightarrow ^{17}_8 O \;+\; ^1_1 H$
The isotopic mass for $^{14}_7 N$ is $14.003074 u$
The isotopic mass for $^4_2 He$ is $4.002603 u$
The isotopic mass for $^{17}_8 O$ is $16,999131 u$
The isotopic mass for $^1_1 H$ is $1.007825 u$

A. -0.001279 u

B. -0.002179 u

C. -0.007219 u

D. -.0.009721 u

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34#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

Find the Q value of the follow*aubkx ltkp3+h+ 3;cf ing reaction: $^{14}_7 N \;+\; ^4_2 He \rightarrow ^{17}_8 O \;+\; ^1_1 H$
The isotopic mass for $^{14}_7 N$ is $14.003074 u$
The isotopic mass for $^4_2 He$ is $4.002603 u$
The isotopic mass for $^{17}_8 O$ is $16,999131 u$
The isotopic mass for $^1_1 H$ is $1.007825 u$

A. $1.191 \; MeV$

B. $-1.191 \; MeV$

C. $1.279 \times 10^{-3} \; MeV$

D. $-1.279 \times 10^{-3} \; MeV$

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35#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

What is the Q value for the followiw,9c 8kdizv e *i+ 8ft;cix9hvng reaction? $^{7} Li \;+\; ^1 p \rightarrow ^4 He \;+\; ^4 He$
The isotopic mass for $^7 Li$ is $7.016005 u$
The isotopic mass for $^1 p$ is $1.007825 u$
The isotopic mass for $^4 He$ is $4.002603 u$

A. $13.57 \; MeV$

B. $15.37 \; MeV$

C. $17.35 \; MeV$

D. $17.53 \; MeV$

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36#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

What is the energy of react7ro03ul fots6bg:j 8nq+n0o ywc rg -5ion of the process $^9_4 Be \;(\alpha, n)\; ^{12}_6 C$?

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37#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

What is the energy released (positive) or absorbed (negative) in the f :zt(0zh:x f k1ar:rvqc jyxv) kh)w7:ollowing reactionfv qx:7zarw j )y :k0k()ztvc:x:1rh h? $^3 H \;+\; ^3 H = ^4 He \;+\; 2(^1 n)$
The isotopic mass for $^3H$ is 3.016049 u
The isotopic mass for $^4He$ is 4.002603 u
The isotopic mass for $^1n$ is 1.008665 u

A. $0.0122 \; MeV$

B. $-0.0122 \; MeV$

C. $11.3 \; MeV$

D. $-11.3\; MeV$

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An X-ray technician takes an average of ten X-rays per day2 sa:btt ocetf l2.7j m/p;pgm6r qf0+ and receives 2.5 mrad per X-ray. What is the total dose the technician receives in 250 working /l+bts2f 7 ;. rgf0m:etmpc62 t oqpjadays?

A. $2.50 \; rem$

B. $5.00 \; rem$

C. $6.25 \; rem$

D. $7.75 \; rem$

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