Physics Unit31: Nuclear Energy and Radiation - 无忧得胜-网上国际课程 (5edu.win)

?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 nucleus is bombarded by an ap 04njg0g2y2o ex +qizzpropriate beam of particles, it is possi2gzjxqg4n2 ei0yoz+0 ble 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 protonb (itje 8tq.2o is $1.6726 \times 10^{-27} \; kg$ 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 consqgq+c4rlz ; za-iw*2served in addition to electric charge, energy, a+iazqg ql*sc;4w-2zrnd momentum?

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 oxygen-18 nucleus producing: /mqm:fa0;fdab fgc7hr0*6a k 1 lnds fluorine-18 and another particle. Wh0l:a0f*b/m gnsdq;m h faarkf1c7 d6:at other 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 sa)gp-luz .jnq(.d3ams eb( 5u 5jgfp*oid to be exothermic 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 s5l9mafny ez0y: 4dx / or8e y829qovyxy, l*jenergy 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 heavy nucleus suuv s.w,d0kpe)jtijge4 uw *m79vau2 .ch as uranium splits into two intermediate-sized nuclei after being struckju u.g jwe )s2d*0ki 4mu7,w.tv9e apv 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 .;9h xy0uxja9o4r;mou6h r tunuclei combine to form larger ones is referred to as4u9 0ut;m;xj ha xou.ryor9h6

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 prodi,a7b x +9zq3*ho0o xpqr+ lzbucts of a nuclear fission reaction compare to the mass of the op *9z3q+x q7 ,h0lo orabzix+briginal 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 nuclear fuspw p*o97zu t.o)kgwi ;azdj s5 .:c5ugion reaction compare to the mass of thewo7c:s9uti5*pawd.p o uj; ) z5kg.zg original 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 hydrogen undergo fus+91toduqudhc*inrtlnd5 qay) ( )8x7 ion,

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 5,veimq hjd-8 wu5zc8fission 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 fusion in the /nra)0hi o8ude4 ol81b jjl 2vcenter 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 by a jt1mv; e xz.*ff8jlqaa36wj-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 energy rrkuw99mqsc+i 2:* w hthe 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 and a uraniul gc s*;7b 6o7h4krmrpm 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" b fy78l 4yrgs.w2g9caxntbr j zr*suxu9/b72.omb. 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 of the term "critza3fhstd 3: 8o.rzt8i( chth mf0i.(mical 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 can. e. + orxi i1ahi.xvtib--6i+ieogj4 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 damage to l/x 6 wr0+;wctpqmpcs p ,5:ojyiving 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+sq(-1rdinge z 28gah stop beta particles?

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*hk) /ubcpy ms(-gm* production?

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 radiation dosage in humans e4jjz;-xoi u18vdgc a,w ,ez6pxcept-jv,1o cgz8 a z6ejx;p4di uw,

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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 theufzn6x0 l7r*p effective dose of radiation in 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 neutrorrsb(j+)j jz3y-u/e+( wjfv hns, it can 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 ntj+)b4j2hkl $^{235}U \;+\; ^{1}n \rightarrow ^{141}Ba \;+\; ^{92}Kr \;+\; neutrons$, 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 rr(stgnv.vbho. g,9 9y-m* goweaction: $^{16}_8 O \;+\; ^1_0 n \rightarrow \;\;\;\;\;\; \;+\; ^4_2 He$

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 following nuclear reactiop,k7 c vn-rvur 25.uqon: $^{16}_8 O \;+\; ^4_2 He \rightarrow \;\;\;\;\;\; \;+\; ^{19}_{10} Ne$

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 following nuc0n4 : ) 3rlcypykc+quhlear 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 m,squyi 5/(k v)/x mhxx,f1zxreaction: $^3_1 H \;+\; ^3_1 H \rightarrow \;\;\;\;\;\; \;+\; ^4_2 He$

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 nucle5ocrl-, ih q -q.-kedbar reaction: $^{27}_{13} Al (\alpha, n)$ 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 reo.gfv-*rwxl p/. ctf3xy u7(raction 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 theo3fcvr7 /(.f.-pgrxt xu*lwy mass of the stationary 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 m*lzkli87vx)-tg w6k following 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. -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 t0 ma+5 o (qo(rft1vbrahe following 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 fc fi), *q*)adylo 0dgmollowing 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 reaction of the prxwxb.zt-) 6obf/1crit;5 afrxs 1y i8 ocess $^9_4 Be \;(\alpha, n)\; ^{12}_6 C$?

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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 absorbesc ht9cuxw.d / j;pn,h xb9*d-j2yag-d (negative) in the following react yc-h j;.2*xpg d9dn9s -ax,b/htjw ucion? $^3 H \;+\; ^3 H = ^4 He \;+\; 2(^1 n)$
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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38#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

An X-ray technician takes an averag24 6jfocfzn gmd;0z2c e of ten X-rays per day and receives 2.5 mrad per X-ray. What is the total docc2fjnog6z ; 4df z20mse the technician receives in 250 working days?

A. $2.50 \; rem$

B. $5.00 \; rem$

C. $6.25 \; rem$

D. $7.75 \; rem$

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总分:38分及格:22.8分时间:不限时

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