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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 5 b7jgt7iw p6nz1i r2hspeed v of the following three electr bjwrnp ig2ih51z6t77omagnetic waves in 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 electromagn0zo r9*k9 injnpbxs za0ip,3 5etic spectrum, rank the following electromagnetic waves s5pz,0 3 kx9 * ip0zojrabnn9iin 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 py q9 7i0)c ztm0/rb wlf17rs;cei1v /zq xtv.a wavelength of 400 nm. Which one of the following choices best describes this type oc007mepv9yizr17;/rwvft ilz.c qs x/)bqt 1f 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 lmcj nm;p0:/( oabrl x2east energy bn(x20j p mr/ moa:lc;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 followit i pd40./hpld4k+lam ng types of electromagnetic radiation has the greatest energy per/amdk4d4p h0 lp+lit . 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 l)2brhy 5jhk0n 0jll6u argest magnitude of mome6 5ll ujn jhkb0h2)y0rntum 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 wa8)cya yzg6 r9lves?

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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 n/q,h nh7ffgg(cdu44taz) 7 syears ago at 1.31 MHz on the AM dial. ggn hc,4h n/ z7as(7udfq4)ft 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 antennpma jdko;5c.;33y m cpa is equal to one-fourth the wavelength of the bro53a ;.cj;op dk ym3mcpadcast wave. If 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 broamhx3tyn0 hpxm y 9m we5;-c6-kdcasts its signal at a frequency of 100.0 MHz. What is the wavelength 9nhx6wt h;k0-mmepmy5x - yc3 of 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 represents the type o.ggo2-w xsq7md*mm 8af electromagnetic wave associated with a fregg8x ms.2w o 7a-mqd*mquency 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 k 3 hp/hnrr;q( fn.i p:rsq nc(v:iq:,an electric field given by the expression (in Cartesian coordinatesn sprh:cihf.p3, ;rn( /vn:r qk :iqq():
$\overrightarrow{E}(x,t)\:=\:6.0cos(1.14\times\:10^7x-3.34\times\:10^{15}t)\overrightarrow{z}$
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 ba1 j,yh4nzq 8,yz 0jw+omst) the expression (in Cartesian coordina,ys 1ybhon8jawmtq4zz0j , )+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 electromagnetmh* lir6y1 -nvoyk3)tic wave has a magnetic field given by the expression (in Cartesi3ym16y k hirn-*lvt)o an 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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