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习题练习:Physics Unit22: Electromagnetic Waves



 作者: physics   总分: 35分  得分: _____________

答题人: 匿名未登录  开始时间: 22年08月28日 10:07  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  
  The basic equations for all electromagnetism were hre/6s bto ufr97 e6fw 2-cw.z qgow(xz-*s8 bdeveloped by

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2#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An electric field is produced)xh 6jssc6tl . by a

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3#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A changing electric fi6m7uf1rkxu 7t bmo6 q1sht;c)eld will produce a

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4#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  All electromagnetic waves travel through a vacuum 10ne*nw8u:n)r 5a z5vizxtjzat

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5#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  In a vacuum, the velmyu1g1ks -ae xx0+kg rj*4 q3focity of all electromagnetic waves

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6#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Electromagnetic waves can travel tn.1d(eew2ofrl nr5 h3hrough

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7#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The strength of both the electric and majp ggyc8qa ub : m.,6a)xtop3.gnetic fields in the radiation field are found to decrease with distance a.6qua x8gpm,.cy ojtgb3a:)ps

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8#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The $E$ and $B$ fields in electromagnetic waves are oriented

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9#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An electromagnetic wave is travezg, t7) afqn4uling to the east. At one instant at a given poinqg,zf)ta u 47nt its $E$ vector points straight up. What is the direction of its $B$ vector?

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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An electromagnetic wave is radiated 7sv9jd mzsz r8+da(a2p/hgn7 by a straight wire antenna that is oriented vertic 9 d pa(vd+n7zm2hjs87rsgza /ally. What should be the orientation of a straight wire receiving antenna? It should be placed

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11#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Electromagnetic wavesgw.u94lqjbdfj met/2rx ff+0+zh fux/i( i0 , are

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12#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Of the following, which is not electrom is,expuy)+7 kagnetic in nature?

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13#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Visible light ranges in wavelen0m)* qs66h-u pfcp xawgth from

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14#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The energy an electromagnetic wave transports per unit time per unit 2oigm1uu)tf3area is the ufi m2guot)31

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15#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The force per unit area exerted by an electro ct /qh+a6r10pzoyriz-z mv(r4r2 7pqmagnetic wave is called the

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16#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Which of the following correctly lists electromagn -nqa ti)/90vsbc4 3b)juhi,(w zawd gjrmo36etic waves in order from longergw ))-j/j anubd93t4 ci qm hswv(6 b,ai3z0ost to shortest wavelength?

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17#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If the electric field in anbz 8fax tr6i48br /kwn7yjdmfc1 0 7.s EM wave has a peak value of 2.0 V/m, what is the peak value of the magnetic fieldw8srrtj8a 6zink17.xc 04 fybm dbf/7 ?

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18#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the wavelength of ligru*1 f *yx h*ve(y0qmght waves if their frequency is $5.0 \times 10^{14} \; Hz$?

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19#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the wavelengtd 6dwtc54 8ksp6ex5m oh of a 92.9-MHz radio wave?

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20#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the wavelength of a radio wave signal transmitted at a frequency of )z8xef0 cvste ykj 53.4b0czn7.2 Mcs3jvzf e)txcnz50b40 e8yk. Hz?

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21#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the wavelength for:aii y0 o(e)zhe 2skk- z-um:.z;f agn the carrier wave in the station WBRN 1460?

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22#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the frequency of 20 mjl 1jdc m4 b-rd7:d jbx7mh.ege*8ud 6m microwaves?

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23#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  How far does light travekfqsb:p k7,i;l in 1.0 ms?

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24#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  How long does it take light to tr, +a7gb8fs1. udahtwv4f z2d iavel 1.0 m?

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25#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  How long does it take the signwi,))wk7 ndnaal from a local radio station to travel 20 miles?

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26#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  How far is a light year (the distance light travels in a year)?i5zyf ):bcm 9s)o(fog

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27#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A radar receiver indicates td,u nko2f:n 5what a transmitted pulse return as an echo in 20 ms after transmission. How far away is the reflecting object? ,u:o5 kd2nwfn

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28#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Radiation from the Sun reaches the Earth (above the atmosphere) at a rate of - 55z ;clpo td4xuuid er6h7v1about ddc;xz rvoet1 lui65hp7u 5-4$1350 \; W/m^{2}$. Assume that this is a single EM wave and calculate the maximum value of the electric field.

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29#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Radiation from the Sun re5 5r35tudphf daches the Earth (above the atmosphere) at a rate of about 3htfrd 5 du55p$1350 \; W/m^{2}$. Assume that this is a single EM wave and calculate the maximum value of the magnetic field.

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30#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the maximum value of the electrw6tx+gv)h jz:ox0 6f aic field at a distance 2.5 m from a 100-W z0a:v6x+w)j6xg foht light bulb?

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31#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the maximum value of the magne +1mfq ews/4wltic field at a distance 2.5 m from a 100-W lifm4 +l q1swe/wght bulb?

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32#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 15.0-mW laser puts out a narrow beam 2.00 mm in diameter.*qq.acp- 5 gfa).tlt y3zc jo7 What is the average (rms) value of the electric field?a 7 *ql3.gz) ycftc.-o5qtj ap

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33#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 15.0-mW laser puts out a narrow beam 2.00 mm in diameter. What is the aver mq4+b6f(ux mbage (rms) vamb+b(x qm4u6flue of the magnetic field?

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34#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  How much energy is transported acrosz6y *ig mkuqm)pej9 76s a $1.00 \; cm^{2}$ area per hour by an EM wave whose electric field has an rms strength of 21.5 V/m?

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35#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Estimate the average power output of the eq)4:f ku-0 ftgr nn1lSun, given that about $1350 \; W/m^{2}$ reaches the upper atmosphere of the Earth. The distance from the Sun to the Earth is $1.5 \times 10^{11} \; m$.

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  • :
  • 总分:35分 及格:21分 时间:不限时
    未答题: 已答题:0 答错题:
    当前第 题,此次习题练习共有 35 道题

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