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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 speedadc,on/:o ob( )1e hrg v of the following three electromagnetic waves in vacuum? The waves are : X-rays, UV eac)(1 ,oh g/oo:r dnbrays, 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 electrtu 0wp98f jm)domagnetic spectrum, rank the following electromagnetic waves td)8fjpm 9u0win terms of 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 radiati8tz7 l1:u u:w5uz zl4ghf j;omon travels through vacuum with a wavelength of 400 nm. Which one of the following choices 18llu74:f u 5hzotg;wj zz:mubest describes this type of radiation?

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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 follob7.wvkzc1hkz7hnv) x6fi5 .jwing types of electromagnetic radiation has the least energy per photon? .hiwxkh 7 z.vcnjbvf)k7z 516

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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 hasz g)t 4vdej;q89nnb 2hn(hcrgf*-i * x the greatest energy perr;i*h-j g c*( th4gnd8 )2qzefbvnnx9 photon?

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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 r). gbq h9ncch*0jrj iv,uv:/electromagnetic radiation has the largest magnitude j)cr q*b.9/,c nhujv0rvihg: of 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 rfdegw c1 -q 7i*(z( hghq-(imsadio 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 ye 0j:*qate)wmq) tn9 yxars ago at 1.31 MHz on the AM dial. What is the ntx *yw:m0)eqj)ta q9 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 tw ne r80e2(cryhe most effective transmitting antenna 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 broadcast frequency of t2r(ewy 8crne0 he 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 vdxba f*(q;a 5; ld,pobroadcasts its signal at a frequency of 100.0 MHz. What is toa;5;f, v(pba q*x dldhe wavelength of 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 50kj96uq+/rb uynk)whvq + cu the following choices best represents the type of electromagnetic wave associated with 9r+y jknk60uh+u wbu qc/)vq5 a frequency 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 field given bynj6r d8j c: 4t;bdroz: the expression (in Cartesian 4d :zcd6 j;roj8nrb :tcoordinates):
$\overrightarrow{E}(x,t)\:=\:6.0cos(1.14\times\:10^7x-3.34\times\:10^{15}t)\overrightarrow{z}$
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 given byz m0tmvtr2hiw,;y3j3 the expression (in Cartesian coordi 0 ,2w;thv iz33trmjymnates):
$\overrightarrow{E}(x,t)\:=\:6.0cos(1.14\times\:10^7x-3.34\times\:10^{15}t)\overrightarrow{z}$
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 w82en7kusn k-go0qpf6 ave has a magnetic field given by the expression (in Cartes2n 0- g8fo67pkq eknusian 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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