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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 correctmb1sg zoia)99i a)bw a-ym6;b relationship for the speed v of the following three electromagnetic waves in vacuum? The waves a-bba;my 1i9ag)9sm ab izwo )6re : 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 electrompy.jzn q844m /rqo-ckagnetic waves in terms of increas cqy4/4p-nm.r 8okjqzing 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 5f o) w1ndxak5 h7du )itr6f/p400 nm. Which one of the following choices best desf d5k/5r f 7p1)tuow6)nhdxa icribes 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 electrk 5vp w eh,u; h9c/y,c7lfvlw;zv9 +g5otlq 4comagnetic radiation has the least ener;,zkyvccc;4w 5w9+ qh/,l5hef gvtopl79 l vu gy 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 8ri4 7xemh+,ci 1chuxthe greatest enhe h 481mui,rxcci7+x ergy per 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 i-9+t*noxj yjlargest magnitude of momentum per photoxo in-+yjj* 9tn?

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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 radikx/-ivv 0wke 7 7zmch-o 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 KFKAi22z++50* )zg syymhtg n jvk ,ygzai9x*uxs 7 started broadcasting 78 years ago at 1.31 MHz on the AM dial. What is the approximate length 29,+sia5i0ygsmgy )vtk7 xzu z*x*h j2n+yzgof 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 om7pu ot iui;q: l11tby)lb69is 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 frequency tqp6l 9mu :ib71tb i)ouoy; 1lof 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 nr;nd) iyzx.*9pxbv *its signal at a frequency of 100.0 MHz. What is the wavelength of the station’s sigib d;*z9pyrx).v* n xnnal?

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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 choic:5jc*1 eljlqjes best represents the type of electromagnetic wave associated with a frequenc*l c1:qlejj5 jy 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 give3jr o;/,y-f;mctumy9u: dyj f n by the expression (in Cartesian coordin 3uc9-u:foj;yymfrd j,t my ;/ates):
$\overrightarrow{E}(x,t)\:=\:6.0cos(1.14\times\:10^7x-3.34\times\:10^{15}t)\overrightarrow{z}$
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*82s.od n dpqqz5jmn . field given by the expression (in Cartesian coor5p.on nmqd8*qds. z2jdinates):
$\overrightarrow{E}(x,t)\:=\:6.0cos(1.14\times\:10^7x-3.34\times\:10^{15}t)\overrightarrow{z}$
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 cr/cmf, hcf*6xgtf xip2f,2ww9nwj vq0+/ 8bhas a magnetic field given by the expression (in Cartesia/,m v,20f/ng+ 6qtbh ccpxw9 w8f i f*wc2xfrjn 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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