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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 co:t-lm .31mjvmar63nkt epuf - rrect relationship for the speed v of the following three electromagnetic waves in vacuum? The wku f-3pme. -anmrvt6m j: 1tl3aves 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 electromagnetic spectrum, rank the following electro r v9f9(nlg eep; o2n,m2rbww-magnetic waves in terms of increasf99 o w;glp ,-e2v2e(rnnrbwm ing 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 v s+we/oh:aw5pujpk/1s 3n1mb,ei*fu acuum with a wavelength of 400 nm. Which one of the following ch pm*5w/nh/i3oe1:jpeu1u f as,k+wsb oices best describes 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 folf+9xsl)1jgw dhy0 z+n lowing types of electromagnetic radiation has the least enex)+nzy0lj1 9 gh+ fwdsrgy 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 the g3 mpc hus3)rr.reatest energy per photonmsp c3r)u h3r.?

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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 follojl b4ra)edky8ya l47xl s+:n-wing types of electromagnetic radiation has the largest magnitude of momentuae lsy +xl4 bka: )jyn7d84l-rm 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 .rk (:su8.woz zerfo vm-na.+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 hj*g1)6h ld7tqwh wm-ago at 1.31 Mhmh)ld1w g7j-6 qhwt*Hz on the 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 the most effective transmittibm/n6w:,c mur3 p jb5ong antenna is equal to one-fourth the wavelength of the broadcast wave. If a radio rcb5m o,nw:/6mj 3bupstation 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 broaf.u w,eq xp6.tdcasts its signal at a frequency of 100.0 MHz. What is the wavel qw.p6 .ftuxe,ength 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 of electromagzc8djg im9ad** b3i m:netic wave associated with aa mgii9**zmbd 83d:c j 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 electricj/htpc9d748*tmpnea tq rm +; field given by the expression (in Cartesia +hpd9e4mtjt7amrpt q ;n8c*/n 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 ) be/9 b*0e.h*huhpf,pzf ve vthe expression (in Cartesiz0f p he *h*/ev9vbfb.u,pe)han 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 has a magnetic field given by the expressioh59l)pd lz/uk wsrlh z91f9 b9n (in Cartesian coordinateh1)zflp z h9rbl d9ku/ 9s5w9ls) $\overrightarrow{B} = 6.0 \times\:10^{-6}cos(2.21\times\: 10^7z − 6.63\times\: 10^{15}t)\overrightarrow{x}$ . 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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