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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 develoqidso 5(z8v k0ped 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 byz9v g ev ei.tnp 2b079tpap6. tntq4+n 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 fielr65(v * kcksoud 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 t,3 fi53an m1vlxw6)dll vmzy( ravel 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 elv3f5m 7ns5cp/ qjv:lp ectromagnetic waves

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6#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Electromagnetic waves wu6 lye:og8hy 43qxf6.xv 6kl can travel 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 magn(:r 4m6 hkbvr)qaf vx.etic fields in the radiation field are found to decrease:x)akvb. v r(f 4mr6qh 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 trave1+ok1k v,anneling to the east. At one instant at a given pointk v+,ena 11kon 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 antenna tdpv;(ipvhk3 .ew xqn) s2*qm) hat is oriented vertically. What should be the orientation of a straight wire receiving antenna? It should .vvq)wekqm(p ; )n p3h*d2sx ibe placed

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11#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Electromagnetic waves iw/v k+ *ryezcd 5.mqg5-dv7uare

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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 electromagn hfp v-l rb*q04mvac3-etic 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 wave tsebcbv2.vxb 6 p)j1tt2b(1m e i+e(olength 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 tr- 6uka xpmzk :olmhy089 si,+mansports per unit time per unit area is thekhz, 0 y+8xuslm-oka p9i6:mm

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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 wave is cal,m zu6xht+p4c( (c cpnled 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 fromh7x 0*cjw vr il5lj,n0 longest to shortest nrw,0*c l0vi5jhj7 xlwavelength?

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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 vatx3h sask hc8+c)h. 2xlue of 2.0 V/m, what is the peak value of the magnetic8csh xk t)2+.shhac x3 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 8dg xa3(m ou1glight waves if their 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 of a 9i:5mt j1c 6xzt2.9-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 freqowp),czcu:.hlgx 2kl(8o appnc9p; 8 uency of 7.2 M hop,c c. k(8cw8;pu2o)9p: pxlgznalHz?

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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 *7*g3fem aospr,f i 1uin 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 mibt:dy;xt i h1.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 in 1.0 msm 6b2.av8jt34wi2cnub 3 tgpl ?

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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 1.0 y bme:q1//b :yfav8 ozm?

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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 tr a,tgic4: vo / kx:qhacp-8ru*avel 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 0or* e5gae(e r(the 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 peu.4 6g3 k6lpjwghic-qsl /o0 ulse return as an echo in 20 ms after transmission. How far away is the re4je-c i0k.u6lsol/6qwg 3g hpflecting 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 th* 0rz:c.(r/ ,v qd eu8xpej63gnc ogeoe Earth (above the atmosphere) at a rate of abou/pe: ecjo3q*xng r8( ,gr6o0c.zu ed vt $1350 \; W/m^{2}$. 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 w,c-:d lyovxk7;puug t2* af: (above the atmosphere) at a rate of abou fpuyl-od:g ,w;vuxa:2k*7 tc t $1350 \; W/m^{2}$. 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 m from a 1ix; f2gt+)+ep o mpd+ egct*q300-W light bupefqmt)+p + *t3cig e;+oxg2dlb?

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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 valup7ylm.zx c 3u1.i1opme of the magnetic field at a distance 2.5 m from a 100-W light buzpxc1.imy.up3o1 l 7 mlb?

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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. What is ,mqbt6shn ch5i :v)z+the average (rms) value o6smvh:h c5 +b,in )qtzf 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 beam 2.00 mm in diilm+(j*b tj 8wngu+f1ameter. What is the average (gfiln m+j1 +t *u(jb8wrms) 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 transportk--xk0z 1mofzhb q +7jed 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 power /t n /zq+ ur4hc7pmbea0ks-a(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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