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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 electromagneo nnp1 4)ilh gk,a:5iz8d7xvatism 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 producvm zxih rf7z,4:o75ff ed 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 will p+-fwr d az/7azpks:y (roduce 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 through2 val5n rsqd *wv,oh )yi47d:f 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 ath.ra w+6:t 9,czh/xuaa mfbj+)5 sez ll electromagnetic 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 40ugah5l 5lb(mvhy s *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 magnetic fields in the radiation flbl. 04au70 unh l p1+t6gciavield are found tu htlg c00lpl7a4 b+ui6.anv1o 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 tramc:5+ixhn g r,tp1 ckco x*0.gveling to the east. At one instant at a given point i0h,c. gtxncic :k5+ mp1oxgr *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 antenna thz2 pb+sx) g a i:-3vsrefsd4,sat is oriented vertically. What should be the orientation of a straight wire receiving3s:d pgs 2 , f+sazrvibx-se)4 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 m/wyjdzjifm;k;d .(djr6 /l: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 electromagnetic in naturudh q1fnw5x7s6r) s8p+0oi jhe?

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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 cktla/.v ( z)lq8ppea o ;i7ygg19h/o wavelength 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 xwy (6kjn hp;3w/k 0skunit area is thekjw3k/sk0;(yhx pwn6

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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 arfl.6vwrfd -o(ea 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 l mlpv f;d4hyj4:w+oa,tm2w* waves in order from longest to shortest wavele;tdplwf:y,jalm mov*4 +4w h2ngth?

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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 v)vqk fn902xtvalue of 2.0 V/m, what is the peak valuexvt2k)n0v9fq 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 e.otnuo o+epp3. vyx;15mnk*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-.z//tzbm;oaez: ryt 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 512nep n-er 9ru1zcuzo51g fk a radio wave signal transmitted at a frequency of 7.2 MHcp1 5znrer21fkg1n 5u-9 uozez?

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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 statq6u+1hn gu9 s .cysyu0ion 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 m07oc-sqath x39mqyve x5y7e -icrowaves?

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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 t;x8bhgg;0 p2stc ty r0ravel 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 ts; /y) tw 2+htcdjef7jravel 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+nr2k+ *iqmtcd8b 7gff eu fo5+gq.-k 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 distani2i8bd hnh/rta c9a6(ce 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 transm7 avz4i 9i5tkaitted pulse return as an echo in 20 ms after transmission. How far away is the 5ikt79avaiz4 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 pfll*6pu i*5iaec19q (above the atmosphere) at a rate of abou lp**lp c6q u51i9afiet $1350 \; W/m^{2}$. 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 ., +v7r/ gy3/w 2.idmytpj rkpaikl8zrate of about3r.maid/vg ky2tiz8.plw7ryj p+, k/ $1350 \; W/m^{2}$. 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 1jot 552 ln j*rmnwoq8900-W light b q* lj9r52nj t8wn5omoulb?

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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 magnetic field at a d r7a+x-c. pewhistance 2.5 m from a 100-W light .c7 ahr-p+e wxbulb?

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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 the averame;ejfd 3 s)s+ge (rms) valuese+dsf m; 3je) 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. Wuu7- hqdqi;ww;ed /3e hat is the average (rms) value of the ma -/q;wdu 3heud7w e;qignetic 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 transportecep-,a,9-wq- ouy :atu4ftxed 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 of thb7w.y)roo0*i(v s fbk xtrbzd*379 ehe 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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