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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 devel6eq*x -/i pum:upux7j oped 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 bi /ds9d/hxiuc/u6 br+/z/ w vcy 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 field will produce ;m4eckl gw w.ugm1-k(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 vacu 60tf+ (tdnwap ht(p5aum 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 wo o) m99f nptyup)/p9zaves

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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 through+in 7+5ayl*jc, l tcng

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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 elecw/u b2f4irb n5tric and magnetic fields in the radiation field are found to decb/unbrf4i w25rease with distance as

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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 tpxm5 j( at2h z.o+jji56eybw8 raveling to the east. At one instant at a given point its5 i8o(62ejwtzjab5 mxhj + .yp $E$ 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 radiateecv;2p5o(t( 2hl exfbd by a straight wire antenna that is oriented vertically. What should be the orientation of a straight wire receiving antenna?(ct;fe2 hxopeb(v2l 5 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 wavep6t6gtuj5a ,)aw d a xyn-b90us 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 electromagnetic7gi j)8viu :fu 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 wavelength f xc;p)hr*+zlb rom

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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 unv5fz)s vzdj2;7 ;r;1-+q ucs hqp mjupit area is theqf q17vu2p;sj zvhc p -sum ;5+z)d;jr

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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 ele ko u4:rc-jo6 dd8if9wctromagnetic 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 correctlyt 3xnpu81hg-k lists electromagnetic waves in order from longest to shortest wax1hg- p3 kt8unvelength?

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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 an EM wave has a peak valun4u0bbd)xu 6h wk2 k3kst a:6ce of 2.0 V/m, what is the peak value of k :4wt3ak6k sxhc)0 6unub2bd 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 their frequencyv( k+t rqbu sw+10yvw0;dls (x 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 x;mv1 ,uhz 8bi/fucf2 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 o)q.88d:oqf k/j;ftbiv r :oqb f 7.2 M:d kqqf bro:v8;8)oqf .ib/j tHz?

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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 WBRNk b8xiz 5tgd o/ mv qu9q(+d;hp,tjt8. 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 microwaach d/s)duoz.12s z62o zqv (3s8cbxsves?

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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 trave9xlxl: u5 ud3 m6720rqcr pmksl 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 ligndayt7 tx* g*;ht to travel 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 signal from a local radimusq9gj 6;(dl0e(lqgeoz /)(,js l wvo 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 distfne*;n+yvt/ ltc l5 p d6rdy-.ance light travels in a year)?

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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 echo iwyb *rn)cm-hfu*+w l m,*me2nn 20 ms after transmission. How far away is tmmwnmn+lcw*-u* ,yhf* 2e)r b he reflecting object?

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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 r r z++fhzi))7nn- aza.;i( qplh0yk1x4dqs wv ate of abou ;vwsai q(k.z1ypq7z++)zxhnh)-f0 n liar4 dt $1350 \; W/m^{2}$. 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 tbmc* z 8/(eoxyenup1s :dt08 nhe atmosphere) at a rate of aboutde 1(z /scn en8 mx0oy8:bptu* $1350 \; W/m^{2}$. 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 electric field at a distance 2.5 +dap vufqg h8eyn;g64- 7uyl*m from a 100-W lig647 l yy ueagfhvdpg+;u*q-n8ht 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 vaz3yrlr2s6 (i)-i,n xi1qygfq lue of the magnetic field at a distance 2.5 m from a 100-W lighrf grl)z1s2y yqxq-iini, 6(3t 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 bea j9w 9jjullcrc).tb(:ig+qd3m 2.00 mm in diameter. What is the average (rms) value of the electric bl jr3 jcu )tdqwg.:l(9i c+j9field?

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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)pr 8qyhmf7k-xn ;n0 y is the average;ynxh)p- kmq 0yn8r f7 (rms) 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 trans4 2t(4x+6cjopbnvxl2y f0o t hported 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 hnf)n 5avuwd5 b* 7q0 hp)m1zqpower 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
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    当前第 题,此次习题练习共有 35 道题

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