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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 electrop w/djz ;if, dk(-f6xw5o z1romagnetism were developed 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 isc6l: q zq;xol: produced 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 fihv/j-u f )4i5 zyjm;ekeld 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 wagyv3 zslluuq;; j,7grj0 p ba0 0es(,qves travel through a vacuum at

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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 velocity of all electromagnetic d4z-v ym) : f1kuw:xgtwaves

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6#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Electromagnetic waves can travehf igg.ic- 6f2glnokuavu)g w55d/ 0 ;l through

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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 an0zn qoq.a33wtd magnetic fields in the radiation field are found to decrease with distance o.wq t0a3zq 3nas

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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 traveling to the east. At one instant at a given po e;1: t:.w0 h0omhb:dyutjmvxav6l:y;4ru h pinhy.p h edv0uj1h t;m w;:ymtx04 a:::vr l6ubot 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 by a straight wire antennaaqgdk n 84+sk7 that is oriented vertically. What should be the orientation of a straight wire receiving antenna? Itskg7+nqkd4a 8 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 waves ars ai-iw/x 7x08jf: bize

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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 electromagnetic in ncida,: kex /c,mz8/rb tfhi),ature?

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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 wavelengicqa(i46 *1 1rm3 op khqi9leyth 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 wag s/pu.vf7d9dxj ox.i;e4ns/ ve transports per unit time per unit area is the en./i.v74xg udos ;d sxfj/p9

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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 7*i6 5bnjby,zhfx 8romagnetic 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 eleclapv: i)c) vx.tromagnetic waves in order from longest to scpvx ail:.))vhortest 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 inxh *6waky42eq an EM wave has a peak value of 2.0 V/m, what is the peak vaa k6x24eh*wy qlue of the magnetic field?

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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 light waves if the z w)ci63tp/ecir 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 wavelength o/t;ay7k+ xw/g9gji b0 4zt tzwf 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 sign5wl 80eq*pf jyl8be7f al transmitted at a frequency of 7.2 MHy5e fpl7 f80e 8*jwqblz?

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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 the carrier wave in the station W6x uc8o1f6). mi8vd- a koyinuy3zdd,BRN 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 mm micrk3*/;)zyrm 4 sy id(q.iay ppyowaves?

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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 travel in 1.0 msf c53pn9u pye8mnr7 z,?

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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 travel 7;xu p-plhz0 c1.0 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 signal from dzmst5yxev; -*lud; /k7los4 ;t)yre 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 yearp5xm)) fkm9j) n)cktgdnk7 n.)?

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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 that a transmitted pulse return as an e gfby+csb3 2+fcho in 20 ms after transmission. How far away is the reflecting object?bb sg+fy3c f+2

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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 reacxib 5o:7ogwjws8e8 j -p5b2e dhes the Earth (above the atmosphere) at a rate of aboui pjw-ed7 wbj os5 eb8:x5g8o2t $1350 \; W/m^{2}$. 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 reaches the Earth (above the atmosphe.y x:v1h,rrghcm ,c r9re) at a rate of about r rgxch h,9.ymc1:vr,$1350 \; W/m^{2}$. 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 /st7f( +cek8gc (+hgflly6g f btl)o 6;8rc vjthe electric field at a distance 2.5 m from a 100-W light bvjy c7ff8l;6gg stc+8l)k(6t frc /g+(loeb hulb?

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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 magnetic field at a distance 2.5sig,ozeq ; +c abwdqv /w5v08) m from a 100-W light b5z v;vsecbqdwai8w ,oq)0 g +/ulb?

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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. Whammkx r0 (+dz)yt is the average (rms) value of the electric fiem+m)( d zrkxy0ld?

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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 iywdn;oc e+9) x.anhv1 x)-am:x g(lnyn diameter. What is the average (e1x.y+xa ocn);ax)ydv(9n:l nwm h- grms) value 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 transportt7p5 z)td.*an kywy6 ked across 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 poq :d--fz gvin7wer output of the Sun, 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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