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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 th 2pcwkhign*up/br 6 7di1a1a z)+4lrge following three electromagnetic waves in vacuum? The waves are : X-rays, UV rays, microwavr117glih +cappzw brd 4)k6n*2uag/ies.

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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 cl9-x/i fs) hqfollowing electromagnetic waves in terms of incri-/)lq9 fs hcxeasing 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 tralfa6 b*t. fvk352) :bp gabdwhvels through vacuum with a wavelength of 400 nm. Which one of the followingh2gd. ff: )5tbbb6vp3 awla*k choices 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 electromagnetic radiation has the l0gse;y t. +zkieast energk;. i +egs0tzyy 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 the gre5j91f g d cgr)ft6 x7iqqs;2dlatest energy per photon? s7g )qlf ;6xgdfjcid2qr19 t5

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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 el898m esib-df3dqii 7,jqgu i,ectromagnetic radiation has the largest magnitude of momentum per phigq-ibd39i 8i8s,7f em uq j,doton?

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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 rm 10xri* jrh*radio 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 years a4f fv-hpd ),gux+1mbz go at 1.31 MHz on the AM didm zf+gf-b uvhx4)p1, al. 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 ofcsk pu x. lkl3.i6r7g3 the 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 frequencyi 3u7g.x3p.lrkl k c6s 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 xdib am/utf)j79fy+ *gw.(c4n n9hjz 100.0 MHz. What is the wavelength of the stn g nm4i(x.ft)wjhb9c d u+f7z/*j9a yation’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 ressh1 hbqkgg786( w*8cxpqj- lpresents the type of electromagnetic wave associated with a frequency cwjs8 qg *lgp1 6hsk(xqbh-78 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 elc w:f 7:k*w,v8vwmdubs:owyn .)f0 j vectric field given by the expression (in Cartesian coordinates):job,:wvm)c vww8v*f0uw f.y :s:nd7k
$\overrightarrow{E}(x,t)\:=\:6.0cos(1.14\times\:10^7x-3.34\times\:10^{15}t)\overrightarrow{z}$
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 expression (in Car608 js9jhn ljg 47 kop)-sxtcutesian coordinatesx9otj lcs -0jspg8nu46h7 j)k):
$\overrightarrow{E}(x,t)\:=\:6.0cos(1.14\times\:10^7x-3.34\times\:10^{15}t)\overrightarrow{z}$
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 expression (in tr8vl3-dg yjqok+( d/ Cartesian coordyto/dqkvg 8(3-+l r djinates) $\overrightarrow{B} = 6.0 \times\:10^{-6}cos(2.21\times\: 10^7z − 6.63\times\: 10^{15}t)\overrightarrow{x}$ . 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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