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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 mw3j5s0x ffe/the speed v of the following three electromagnetic waves in vacuum? The waves are : X-rays, UV r jw0fm/fxes35ays, 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 follop2h/lt58 e*vg14rejj zd6zgowing electromagnetic waves in terms of increasing waveleng25o v1z6tejj* gl 4ehpdr8z/ gth

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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 4wh 8p l *q.v*amq9;dpnn k13sc00 nm. Which one of the following choices best describes this type of radiationwlk*v1 .8*nqaqh9 ; pmnp s3cd?

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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 rt+** k dn)lzeleast energy per pz*kedlt )*+ nrhoton?

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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 hy7g , y4xo7pxn4v ): ovq;vkxpas the greatest energy per phongx:qvo7vx p,o 4 y)7ky4xv;pton?

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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 largesttyc:i:vkl) un ;38dx/ gfh)pj magnitude83gfc l)dkx:) i t/upn;h yj:v 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 rad-b 5) msut z* jnfx45,kgycdku/g0d2u io 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 1.3j5* ( h5qk dbuitlwe: w r9meh,a,)9fy1 MHz on the AM dial. What is the approxiy5b5r :jdqwef,)etu ,lmhw 9 9k *(haimate 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 t6dqhu m 65f-mohe most effective transmitting antenna is equal to one-fourth the wavelength of the broadcast wave. If fomq6umhd6 -5a 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 at a frequency of 100.0 MHz do arf1mk2(s8. What is the d a2m(fk 81rsowavelength 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 represen/p jaou z)ov(+ts the type of electromagnetic wave associated with a frequ)ap(ovu/j +o zency 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 fieldb:n h qqp30qsi. e*scax4:r,d given by the expression (in Cartesian :rn hq0*s.4d3pb xa s:q i,qeccoordinates):
$\overrightarrow{E}(x,t)\:=\:6.0cos(1.14\times\:10^7x-3.34\times\:10^{15}t)\overrightarrow{z}$
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 electric1 n) ome3f2ubmizt *nv37(z cs field given by the expression (in Cartesian coordinunmin )fme*ozsc713 ( 32 tbvzates):
$\overrightarrow{E}(x,t)\:=\:6.0cos(1.14\times\:10^7x-3.34\times\:10^{15}t)\overrightarrow{z}$
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 (itgbx 2/hu t9si(fx:2sn Cartesian coordinates9i2: hf xxsgut/(bt2s ) $\overrightarrow{B} = 6.0 \times\:10^{-6}cos(2.21\times\: 10^7z − 6.63\times\: 10^{15}t)\overrightarrow{x}$ . 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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