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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 electz/luyfc : q3s647d j6i7uboguromagnetism 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 prod*rd ;v 18uocsvuced 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 jf05/9i (fw jkcn yp1 mn3ev5ifq*6vffield 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)k mh:gs )2+fi n8ruvqqmti) 2 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 5xtc*9:ha;xi 5igacq:zd u7 rwaves

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6#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Electromagnetic waves can ;d ip dq3zr3vu/+,o0rbwie /wtravel 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 evu5m,tyi+oxf0v( st ) lectric and magnetic fields in the radiation field are found to decrea, yimxtv)+50fst u(vose 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 the east. At one instant at a givedlpd84 8gff 6wt) na;kn point id6p84anfkw)l d g 8tf;ts $E$ 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 2 u3 e*qhie j)obzwt92antenna that is oriented vertically. What should be the orientation of eqi jubet3oh29 *2zw)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 waves 6f9t )vg6e .h mmi3lanare

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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 el;eu. oj8j g.voectromagnetic 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 waveleng:ddjrspzf;-hq4 6ue 2 th 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 pe: v9) hs5rl lnh11urcfr unit time per unit area is thelhs 5 19c hl:)frru1vn

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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 are dw9nxk) 9fl;wk0eme *a exerted by 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 wavese1+c,:cfvmt (xjbtfvq )f 2u9 in order from longest totuf()vj tfc 2qce+,vf1m:xb9 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 wave has a peak value of w0cmq;jfc /;4ep7 bk 5,neo cj2.0 V/m, what is the peak vwp/ m5,c7;bco4ckfq jnej0;ealue 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 their frequency is 0j1fsr/spb kg b;z8dxi-a q*.$5.0 \times 10^{14} \; Hz$?

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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-MHz radi19ux*igwu. pfnjf 6p:o 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 fggp :8 3-nuzqdj6cf) transmitted at a frequency of 7.2 MHz3npj:-f gf8 )g6quczd ?

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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 carrirdr 6 lme 10vbn: gsienl,5o2(er 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 ox 9ykg+2wzgmy1e 7qs)f 20 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 in 1.0f ili07 5m0x( x0maiqp 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 travel 6 wv3lz3m0 pkl1.0 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 frovwags8h+b zc+.pf u3: ee3 0esm 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 yea j.ilcm9dd (4xq s cv,/) q2e;pj2haszr)?

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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 ue1xs *(:x qtg6y/azy9y3(0vw qyk rv a transmitted pulse return as an echo in 20 ms after transmizyq0y: a*s(1y3g qkt9 ux6 r/yxw(vvession. How far away is the 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 rate of ab2(ho zdh7 pf,iout,dh7z 2i pho(f $1350 \; W/m^{2}$. 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 xx(1k(jgl 2 se:0qg buv.6ee i(above the atmosphere) at a rate of abou:glu 1( 6 .(jeksi2v gbeqxxe0t $1350 \; W/m^{2}$. 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 v3ci(ajgxt)h pji gw/.u8s ;h7ep6 u5aalue of the electric field at a distance 2.5 m from a 100-W light bulb?hw.ip(;3gaxhj/ jc )85ug pu6es7 tai

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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 makrfoocq /+. d7gnetic field at a distance 2.5 m from a 100-W lightr7oc+oq kdf./ 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 beamui.;c7rs3 oru 2.00 mm in diameter. What is the average (rms) vai73;ruc.s o urlue 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 narrotxasq2y*)zn,rq5ho s6 ) h4g cw beam 2.00 mm in diameter. What is the average (rms) value of the magnetic fi ht ya2)6)5zsqrxo nhs4cgq*,eld?

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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 acr((yq2 w9m0b zw9rzjueexz 7n g,tby 5+oss 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 Sun, given that about ,xe-q7pg; rczbaq/( p$1350 \; W/m^{2}$ 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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