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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 ww6*pa: jng.ywu0mchpq0v,3zdr,5 helectromagnetism 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 is produced by az1a r,,qqu c,lw4bq3t

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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 u4dy6d lzh5)ewill 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 /3gh6g bzw; ruvacuum 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 eloot .4 .wlmz yaxm0x-lw )hm78ectromagnetic 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 travelp.f qsms6 2t-nm s(jk3udf*c1 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 and magnn5q-6pd5 tgri etic fields in the radiation field are foundnri-6d5qp tg5 to decrease 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 traveling to tws4u:hce67,iga 1giqhe east. At one instant at a given point it1 6 i:cg ,iq4uaewh7sgs $E$ 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 anzs7,6w+e3g rumpib1fpk8 hq)tenna that is oriented vertica3zwe+ps1m 8, fph )67irubkgq lly. 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 wavessl 1ndh(3sk9 vmnunrn 04om .; 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 e:8tt5y: y jdarlectromagnetic 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 wavele. h.e8iz(us :ioc 1cixngth 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 electrr+tk /r7uqp/ jomagnetic wave transports per unit time per unit area is the+7r/ jqpurt /k

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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 electromagnetic wi58um 3 hinu:have 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 electromagnetibl r(gns 78p kb.5dh w*ky1i 58ad/fce-t c9tqc waves in order from longessftayk8q 71kr*d t9d 5(gbb/e ch8cinw-p5.lt 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 an EM wav5fih d 9ca2cvhl sa1px. c3dt1o*1jbxtem/95e has a peak value of 2.0 V/m, what is the peak value of the magtdmhide.52h9va5p1f 1xt*xj b ca 1ls9/c3 o cnetic 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 frequtud gxrk,n+) (ency 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 of a 92.9-MHz9 xd2hoij9n dm0s*4ye:uo bxq9 jx6q, 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 transmittedvre skv1) u,s8 (;ytpoju3qkzr ej8:7 at a frequency of 7.2 MHzev; 7(jps e ur),u:ot1kr8qs yk j8vz3?

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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 f1 magq dpd d) yq)07sal.x4r-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 mm miz7d va8 fl)ys1-s.cux crowaves?

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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 .qe bm9d c 8nokj90vq(.jn n:ain 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 ligh1sj p2o7l jv+mt 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 radio station to travel 20 mile7ns rfpfto 9gv ;2o1.bs?

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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.xj0x7k d y8qy distance 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 in 2(*qrx(p:b dcmtuag+( 0 ms after transmission. How far away is the reflecting objdmr:tb x(p(*a( cuq +gect?

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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) *maeb.ulf3 ;4ged: j0l 52egjj4pwb rat a rate of about e bwl2bjml0f:drg j 3*j pe5a;g.4 ue4$1350 \; W/m^{2}$. 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 s5b. nb bj)c-areaches the Earth (above the atmosphere) at a rate of aboubsb5an .j-c) bt $1350 \; W/m^{2}$. 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 electr(zgdjv 2pjf,4tf k+:q zo4p l2ic field at a distance 2.5 m from a 100-W lig,olqj 22tfg4zz 4(d+jv:f kppht 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 magnc/yj6 m dap1p*etic field at a distance 2.5 m from a 100-W l*j 6d1cypap/might 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 out2fpxv+2 kvx)vih-8 riw.t ca + a narrow beam 2.00 mm in diameter. What is the average (rms) vviv28+r pcv + x2-)ihawkt.fxalue of the electric field?

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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 l 3.bzhbt-v)z beam 2.00 mm in diameter. What is the average (rmszhzt3- bb.v l)) 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 transported across af./k6 qbgs,yd $1.00 \; cm^{2}$ 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 6gkroyje*: hij-mm:; x2 gx o2power 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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