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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 db)kkn6 5 qcw8developed 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 producedhf*0to a7t2s b 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 field 8h01j /lzyum qwill 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 t omlxcm7xf(z;a b5o )/hrough 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 waves4 iz. g dlbnyp4n2.d1h

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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 throug0lh2em n 5aklsj bp90 u(adw:+h

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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 e8goj zqxg;6uhbr8 p21 s)na *ulectric and magnetic fields in the radiation field are found to decrease with distasbqh *g1ojuz88g) axnp u;62r nce 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 iqe z79z7r,n*jji opi/s traveling to the east. At one instant at a given point j7 njpzzr*9e/ii,o 7q 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 wirep5xarg q:99web7 uq a9 antenna that is oriented vertically. What should be the orientation of a straight wire receivin7 9pq9ueq xa5b9a r:wgg 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 wavesm4wvgh cu hc;g9o99znbrl2 qd(zn e *ne*2. /k 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, whiqi,.2 oduf (avch is not electromagnetic 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 waveletcz:k xj3 :)xtcta7:t ngth 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 electromq11uk dcb1vu0k/8vlmu eh 8p9agnetic wave transports per unit time per unit area is theku 0c/bvvl1 edmpq1h u19k88u

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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 byrak8xvm6x5hc p 3k4k9jl+n2n an electromagnetic 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 electromagnetic waves in order from , 35vd*9 q*rw 9oq wj3omzggqolongest to shortest wavelengtg,g v*3m59 q ow3ow9zoqrq*djh?

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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 cml- b5lk d8;ean EM wave has a peak value of 2.0 V/m, what is the peak value of the magnetic fll5kme;b8 c- dield?

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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 frequenu09s m::sj rqlvf0/(a x: cg:k jdqja+cy 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 wavelengt8 5iyzhj-t;bwluk ), lh 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 tb6xk,l j,tcs(rd*rg ps*yau3u9w.8 wave signal transmitted at a frequency of 7.2 MH8 rpj*k9t3cuw(ds lxs*, r,b y.tagu6z?

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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 WBRd 5fgjc7hzvzt5t -9 knw30e i/N 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 2-3e8 x8tfwyw:y) ujz+ipk 7l q0 mm 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 travel inv c:40fp+bs 6gincg /q 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 lighjt7dkv. 1y57vw sph9 1gg.rfwx(4nxz t 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 loc.9+b5yx.v;z i a pwuadal 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 dikj8 mk uj(gvs.v(k:4pstance 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 +(dbpfj vc0 b/echo in 20 ms after transmission. How far away is the reflectinpf ( dv/0+bjcbg 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 er3 )9lh-* nflad*a7u- y okxzthe atmosphere) at a rate of abo )f7-kya3 xrdoanhl-*l9* u zeut $1350 \; W/m^{2}$. 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 at 5fampta;f +x;,zes(e mosphere) at a rate of about f ,pe5(etafxz a;;m+s$1350 \; W/m^{2}$. 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 17/sozw)ib 8u42t 7qmkk4ghsj ib gl8field at a distance 2.5 m from a 100-W i/hgbql7 b148swkk u)sjz87g4i2 to mlight 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 thej6ee6 +8qqtbx)w;4 nw+ mone w magnetic field at a distance 2.5 m from a 100-W ligw4ej e bqtmx)w8w 66qneo;+n+ht 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 bo090li d2s gmieam 2.00 mm in diameter. What is the average (rms) value of the electric field?92 0gims0dloi

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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 n mkr(qx5ko re+3) a92t1hacuuarrow beam 2.00 mm in diameter. What is the average (rms) vale1mu9 3 5tr(cuhak xr)2 oqk+aue 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 aw xsi 7pd9+6n3*g 5h;aw jgqthcross 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 Su1dgk3qr dd3 y4fk 4;tzn, 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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