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习题练习:Wave-EM Wave



 作者: admin发布日期: 2024-07-31 22:50   总分: 14分  得分: _____________

答题人: 匿名未登录  开始时间: 24年07月31日 22:50  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  
  10.19: Which is the correct relationship for the speed v of the n;c;2 z qj;c5lgtez ,gfollowing three electromagnz2 ;;l 5q;gz nccgtje,etic waves in vacuum? The waves are : X-rays, UV rays, microwaves.

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2#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  05.15: In the electromagnetic ob0xd-n,r9xl: x u let;3)slf spectrum, rank the following electromagnetic waves in terms of xld:u9 n3r;e)x lsf-x0lot , b increasing wavelength

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3#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  12.06: Electromagnetic radiation travels through vacbyjnu a+h1, f-uum with a wavelength of 400 nm. Which one of the following choices best describes this type of radiationa1j fb+,hu ny-?

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4#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  95.11: Which of the following types of electromagnetic radiation5g tbb*di7i6yh 0y 5xd has the least energyg550hy iyi7t*6db xbd per photon?

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5#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  08.07: Which of the following types of electromagnetic radiation has 1ugj3gt rrthhgt;3r3m:j8+op -d4eq the greatest energy per photoetd+r- gr th :3ug84jm pr3;t3h1gjqon?

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6#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  09.25: Which of the following types of electromagnetic radiation has the larg( d i8d 20j3ne auoc icn-b,k7znwk05dest magnitude 8-50u wcd,j in3kceaidk07 on2z db(nof momentum per photon?

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7#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  97.04: Which station broadcasts with 3.27 m radio m+x.yh09nppefmcodfvr ./ :1 waves?

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8#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  99.25: Pioneering radio station KFKA started broadcasting 78 yx(oquer4o/dl ckcklw q 27 (8w89 fq7r3+ubayears ago at 1.31 MHz on the AM dial. cuawf( xlydoeqqb /rkl 4 2r93+7uoqw8 ( 8k7cWhat is the approximate length of its radio waves?

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9#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  00.07: The length of the most effective transmitting ante oaopyw1 -1wo(nna is equal to one-fourth the wavelength of the broadcast wave. If a radio station has an antenna 4.5 meters long then what is the o(p11oao yw-wbroadcast frequency of the radio station?

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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  16.15: A radio station broadcasts its signal at a frequency of 1001nb0w,pjw ow9w2 r+r 4qkh4j l.0 MHz. What is the wavelength of w49l,4q0bjonp+r2wwrj 1 hkw the station’s signal?

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11#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  17.16: Which one of the following choices best represents the type r./:m nu+0cuof or4y:fzk9re of electromagnetic wave associated with a freq4/k uecr:y0oumrn: z9.f+ rofuency of $10^{18}Hz$?

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12#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An electromagnetic wave has an electric fi)mvu5k:gvv )g wrz6 k3eld given by the expression (in Cartesian3m6rk vuwvk5 z)gv ):g coordinates):
$\overrightarrow{E}(x,t)\:=\:6.0cos(1.14\times\:10^7x-3.34\times\:10^{15}t)\overrightarrow{z}$
09.48: What is the direction of the energy flow for the wave?

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13#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An electromagnetic wave has an electric field give/mvyorw7 .bys3 p n0c (t+i9abhhr3r 5n by the expression (in Cartesian coordinates): hp vb5r h7orr.y+a ( yiwc0s 3mbn3t9/
$\overrightarrow{E}(x,t)\:=\:6.0cos(1.14\times\:10^7x-3.34\times\:10^{15}t)\overrightarrow{z}$
09.49: What is the direction of the magnetic field at time t=0 and position x=0?

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14#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  11.48: An electromagnetic wave has az0bol mv( ;9 t(ianuz9 magnetic field given by the expression (in Cariol (0 nm;(zvb t99uzatesian coordinates) $\overrightarrow{B} = 6.0 \times\:10^{-6}cos(2.21\times\: 10^7z − 6.63\times\: 10^{15}t)\overrightarrow{x}$ . At t=0 and position x=y=z=0, what is the direction of the electric field associated with this wave?

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