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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 dcl +mf5x9q+50q cp uospeed v of the following three electromagnetic 9p+5cdqmqc x 0f l5+uowaves 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 spectrum, rank the follow syta9 xak (6,v1piv*n ikt3f;ing electromagnetic waves in terms of increasing wavelength3tia1n 6xt pkf*i,vk ; va9sy(

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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 v; 0o9+geo 0g 3br bdnsckzo*qw,;7gvnacuum with a wavelength of 400 nm. Which one of the following cvg sgo bo wrn* enk;c,bzoq70+;039gdhoices best 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 following types of elek3i78t 0 jebwbctromagnetic radiation has the least energy pitb 8ej0kb3w7 er 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 the greatesw:q lbd:4-3-t+.gvo ekg h vnqt energy per pho3+-ogdv-v.he 4:g:b qktlqw n ton?

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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 radiatr ie/ ahmx8z91ion has the largest magnitude of momentum per photmihxae1z8r/9 on?

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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 wava mic59lebt4 -es?

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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 stationt(k,72m;fxcmh id6wg1h+hb j KFKA started broadcasting 78 years ago at 1.31 MHz on the AM dial. What is the approximate lmk mt2cdhb g+h,; (7 fjiw1xh6ength 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 antenna is equal to+9: hkn n2cwnjm4 ;ep0rlpp j dqq*):o one-fourth th:c : woqhnkl*2m j npp9j)qrne40d;+pe wavelength of the broadcast wave. If a radio station has an antenna 4.5 meters long then what is the broadcast 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 100.0 MHz. What i4wk/a y/xf x,l+nsr+hs the wavelength of ,lax4sy +r //+wh xkfn 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 qrdrj*l0o: ttg;,uyhb ,8 6d 9y+yc htof electromagnetic wave*crg ott8,tr: jqb dyy +hd9u06hl,;y associated with 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 7vzvys h0iow d6n-wk1:om0 0zby the expression (in Cartesian coordina-s 0:o0n hdym1ivw0kvz76 zwotes):
$\overrightarrow{E}(x,t)\:=\:6.0cos(1.14\times\:10^7x-3.34\times\:10^{15}t)\overrightarrow{z}$
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 0ko;k; hl6gy *ez4wdnfield given by the expression (in Cartesian coolk6eod;*zg4 knh 0w ;yrdinates):
$\overrightarrow{E}(x,t)\:=\:6.0cos(1.14\times\:10^7x-3.34\times\:10^{15}t)\overrightarrow{z}$
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 a magnetic field given :kuca8h b) b6,xwh7hbby the expression (in Cartesian coordinates) hbb, ucwxa7h:hkb 86 )$\overrightarrow{B} = 6.0 \times\:10^{-6}cos(2.21\times\: 10^7z − 6.63\times\: 10^{15}t)\overrightarrow{x}$ . 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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