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习题练习:Physics Unit22: Electromagnetic Waves

 作者: admin   总分: 35分  得分: _____________

答题人: 游客未登录  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 wbon+m:r0v 2 +l0 yghfnii j4y;ere 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 produc-rcy4 tbbjdf5e,yv p u62m; 3ned 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 fhy2vse cq*0ej: jfa1 9ield 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 through a vacuxnv xe1xhi+p(n5; 5 :onm3wmco2g q)/vt 6 ajdum 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 electromagr27 tqz5sb :obnetic 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 travel through tp9 nz89e(s0z3ho qmp

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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 ew -+6snadsq5blectric and magnetic fields in the radiation field are found to decrease with distance -b qd6+ass5wn 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 v 2+bkr v6: dfcji4ga(the east. At one instant at a given poijd62fbkgrv+ v4(c: aint 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 u-8xvp,jbg n 1wire antenna that is oriented vertically. What should be the orientation of a straight wire receiving antenna? 8 v, u-npxjgb1It 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;zfumd( )4c8 uu) 1y2amhvunq 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 notzc:)y ff6cn dwf/o+t, 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 woqr png 4:lxn94y5s6 k w dhfnn575d4gavelength 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 per unit time per u8a0 /sd mu7jr9mj kem/8erw( unit area is theuj rmaje9/ds(e/r w08k 78mmu

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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 ant3xtb i7u 2qprouqu kgh7(965 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 azz b5e7o uue0o;bts i5w (a-qoi42:xwaves in order from longest to shortest wavelen5aza i :o;40t oeqzu(iu72bx-e o5 wsbgth?

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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 avfjx n+kvh w+u)v,7 8w0 gxpf9n EM wave has a peak value of 2.0 V/m, what is the peak value v)f7v,+ 8xwh0w vk9ju+g fnpxof 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 mv br:2ht2r7h light 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 9 jl;+h ir1wxv82.9-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 tr3wvr ) pf;u.*arfl17-zj fi amansmitted at a frequency of 7.2 Muw;1iv)r a-7pa.fmlz jfr*f 3Hz?

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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 t i5/qor.ln ltg:j4 p4q.cdq-vhe 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 micrgao3 ;m4eegj-m as 5tt8s m:273mhjvbowaves?

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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 j: yev(3yfx.iu1zj f)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 light to travel 1.0w dsz:09 kpua9 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 who(j8cfc 8*0 rv;bitmiles?

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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 year0bzfnnu1s i,r .7buj x7 a6at5 (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 pulse return as an echo in 2ui j-y)u wba(w)th7.xej 9q(r,vvo3 p0 ms after transmission. How far away is the reflecting ohr3(ujy9x)i,w .-vu qap7(j)o e btwvbject?

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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 cbrk w/1f17wh the Earth (above the atmosphere) at a rate of abofw 7 k1hbc/1wrut $1350 \; W/m^{2}$. 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 atmosphere) at a rate of apf5wm a(c/75 g,wnev7wc esf3boe7w5 f g/pcm vs(n3fe5 aw7,wcut $1350 \; W/m^{2}$. 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 vaqn;c).qoil2qo ,z8bma )p7(vmy zu: llue of the electric field at a distance 2.5 m from a 100-W lighyo:u)coqz7m)vq; np . 8lmlzqa, 2bi( t 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 magwyuxe k56m5+enetic field at a distance 2.5 m from a 100-W light 65e+w5kmxuye 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 beam 2.00 mm in diameter. What isl:n f1morola7. 28qa m the average (r.lmr1:ofma lo82aq7n ms) value 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 beam 2.00 mm in diameter. What is the a2o w ,5e.mnikbverage (rms) value.5ie,o bkn2w m 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 tranku3oss4l/ hvhef+x* fv:bu7-sported 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 output cr600saam 1 lrof 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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