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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 relationsoy7ykj0m29r lhip for the speed v of the following three electromagnetic waves inkm7 rl oj0y29y 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-u8 k,qo:jo u4fkvs:gc72 sib, rank the following electromagnetic waves in ovucg::7fu8 qsj42-bskiko , 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 radiation trf j7xt9cx)w )javels through vacuum with a wavelength of 400 nm. Which one of the following choices best describjt)fxc 9j)7wxes 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 typ j5*mdvb.8( n qg5kng bi 0khal38-x,uwtqo-hes of electromagnetic radiation has the least energy peaw, - jv.hl ihgnk8qoub qt*08bd5-3 gx(mn 5kr 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 fo.;qtmgf+d e6a r z r,:y9c/xzvllowing types of electromagnetic radiation has the greatest energy z a;grzv,.x/d6 qecf ym:9t+rper 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 electromagnetic radiation has the lak bl+jz98z d) r xbi;6f*ejv0drgest magnitude of d6r+* k8v 9jbzb0e;l z x)fjdimomentum 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 waves 8-bki8dm4 rm4 3ltlmn y8hh0kn kl5j5?

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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/yc3f6wl- 1u9cqwe x;d v3 ,gf-wgtuo started broadcasting 78 years ago at 1.31 MHz on the AM d ,e/f6 g-u3f3-cc;wyvwtwu dglo 9q1xial. What 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 antenna is equal too)5lvafu9 x(f one-fourth the wavelength of the broadcast wave. Ifulvof9 )f5ax( 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 ckbtlvsvaxps(f y53lh e6 7(1(+x b 6a100.0 MHz. What is the wavelength of the svsv beck5x 1abh( 6yl 7tla+xfp( s(63tation’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 typeiji2 pl:x4u ny/vx; (x of electromagnetic wave associated with 2ixi;x jyxn:u4l/vp( 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 fil.2 v 5r y (wi;b,nwfmq3jhse-eld given by the expression (in Cartesian coordi.h, b-wes3(5;2im fw vrqnyjlnates):
$\overrightarrow{E}(x,t)\:=\:6.0cos(1.14\times\:10^7x-3.34\times\:10^{15}t)\overrightarrow{z}$
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 by the exet g9hk j5gt44pression (in Cartesian coordinates ht5kggtje49 4):
$\overrightarrow{E}(x,t)\:=\:6.0cos(1.14\times\:10^7x-3.34\times\:10^{15}t)\overrightarrow{z}$
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 by the expressio ymm4 avy78fh.t4q7tan (in Cartesiay tqm7a4.7 y4vtfh8ma n 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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