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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 follow az ohsol0)uqg effn5-(,-5kwing three electromagnetic waves in vacuum? The waves arefn)5( lq-ha,ogs-ufz 5e o0wk : 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 following electroq4 2jm ;yesi0 bj:h :, fs*okkws/j-bb6sy3vamagnetic waves in terms of increasb -sa,yjf43:/2vk sik;bmsoejq b6jw:0*hysing 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 vacuu*hdg:n - vk1k(6c uiebm with a wavelength of 400 nm. Which one of the following choices best des e16dugc-kk:*v nih (bcribes 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 e* jk5zia ,zbhs6tp;owe *c*8has the least energy per ,6z5 j tec*wehspkaib**o;8z 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 gqs zb e/0tju a1*vt-w9yd s4s1reatest energy per1t-st9sey4au1v jw sb/zd0q * 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 q lm6lp,yo lf)bbm teq1+1rs( n/ te-0largest magnitude(lsnrye ,-l bto 6 pt+1qq01mbflem/) 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 radi tn/:o4/8up zx-wjvt biy7ivr ;.x6 vgo 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 startex t0dlh5ah y;4 p)*wped broadcasting 78 years ago at 1.31 MHz on the AM dial. Whatw*0 xpp d;5ty4)aehl h 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 antenna4rnk,6m g zv. l9t2eeztx85oo is equal to one-fourth the wavelength of the broadcast wave. e95 vrlnomt x6z48k.2o gt,zeIf 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 a)y f.9z:niuic t a frequency of 100.0 MHz. What is the wavelength n:u.fyic)z 9 iof 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 re (n6t 7s,94 wfauxwzvapresents the type of electromagnetic w (9t6 4xuzwvwn7saf,a ave 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 by the expression (in Carte*yrk bj 6 2;e8pmfowu5*)ufrlsian coordinateu*e5rj 2fy fuobr;wl)6p*m 8k s):
$\overrightarrow{E}(x,t)\:=\:6.0cos(1.14\times\:10^7x-3.34\times\:10^{15}t)\overrightarrow{z}$
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 e 6j,pbzi8hov3 lectric field given by the expression (in Cartesiahiov, j3z68b pn coordinates):
$\overrightarrow{E}(x,t)\:=\:6.0cos(1.14\times\:10^7x-3.34\times\:10^{15}t)\overrightarrow{z}$
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 x qurj-yl sih85i*d86 has a magnetic field given by the expression (in Cartesian coordinar*j lqi5i 8dhs8xy-6utes) $\overrightarrow{B} = 6.0 \times\:10^{-6}cos(2.21\times\: 10^7z − 6.63\times\: 10^{15}t)\overrightarrow{x}$ . 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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