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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 followingb9kvk-62o bez three electromagnetic waves in vacuum? The waves are : X-rays, UV rays, microwavese6bv bzkko2 -9.

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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 .l2jo bznpq*4 5gya*tdk:mr +spectrum, rank the following electromagnetic waves in 42*zgap+q k.rb lotd*n:jmy5 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 travels through vacuum with a wavelength of 40 *l 7igvqr)6ji0 nm. Which one of the following choices best describes this type of rarvi7gi* 6lj)qdiation?

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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 aml.8r0 moo+gthe least energy per p ga+rl8mom.0ohoton?

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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 typenc xg.kbq t:60s of electromagnetic radiation has the greatest energy per photq.gk :6xtcb0 non?

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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 tha+ :gtks2 et9pe largest magnitude of momentum per photon?at9+e:kg2 pt s

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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 lqy5fjjl u u y,7ryq/1/o 6;etradio 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 ago at 1. t g-1:v a en.ng8hn/c45ibera31 MHz on tg1 g-5nbe:nrv 48/h nce.ataihe AM dial. 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 t.3lbd xi2ti;ysx8 2ayhe most effective transmitting antenna is equal to one-fourth the wavelength of the broadcast wave. If a radio station has aays ytd.2; 83 x2libxin 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 frequencyv,1 s+ru p-m .gq*dkok of 100.0 MHz. What is the wavelength of to+ u*.qsk,kgdr1 m-pvhe 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 follp0u6ygtunzokp9*;7xw5r 3 weowing choices best represents the type of electromagnetic wave associated with a frequency ou*7 p9ryezwnp kt; xw03gu6o5f $10^{18}Hz$?

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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 Cag .4c;wy2 ebeartesbe2 wc;4.geayian coordinates):
$\overrightarrow{E}(x,t)\:=\:6.0cos(1.14\times\:10^7x-3.34\times\:10^{15}t)\overrightarrow{z}$
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 slx 7mw kc5n1f /t*kkcq nq,45expression (in Cartesian coordinawk1s5fq x*m5k cqn47,lt nkc /tes):
$\overrightarrow{E}(x,t)\:=\:6.0cos(1.14\times\:10^7x-3.34\times\:10^{15}t)\overrightarrow{z}$
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 magne 61wx)u+ s/qzdgafni:qse 8 k)0;js hctic field given by the expression (in Cartesian aj0ch6sf zqgnss;d i1e+k ):w/8 xuq )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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