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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 r vez dg hw)9hen+0u9,nelationship for the speed v of the following three electromagnetic waves in vacuum? The wav 0eh, dwzveg9n9 nu)+hes 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 folkh ,as,o-rw .bxa5y9plowing electromagnetic waves in terms of s, a9 .pokyxar-h ,5wb 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 z59bsdt w(i)cradiation travels through vacuum with a wavelength of 400 nm. Which onez )(si9tbc w5d of the following choices 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 following types(ol)llk751pq wlb ;ut of electromagnetic radiation has the least energy w1 5t)oluk bp q(l;7llper 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 nq2xqk (t9yb l 1),,x4qaj hsnhas the greatest energy qtbl1q2n9x,x k)4,qys(ahjn 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 tsm ralec(,)g3t+fz*q hcn.* ghe largest magnitude of momentum p.3+ mc ,* eq(g)frszn*cgh alter 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 b,80g8miz9,g c ougfgwith 3.27 m radio 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 ago4mocku03qa dau3ab 6 a9 u+-l2wekac( at 1.31 MHz3um+kwc49aa d aku2a (6quce 3lb oa-0 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 effecvdf se iql6b(9f3q,, ctive transmitting antenna is 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 of t,bcffdi 9,ve36( lsqqhe 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 broadcastspa-y*f86 v kdsy0d)ibispc ; : its signal at a frequency of 100.0 MHz. What is the wavelength ofbafi80d)vy p i6:p s*s yk-;cd 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(a q ;t:tzh+qy5i7* pwzx3jn f electromagnetic wave associated with a frequency of *+q7zzty;ix (3tqap j hw:5fn $10^{18}Hz$?

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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 bds4*)s ;zdnk ay the expression (in Cartesian coordinata*d zd)4 nkss;es):
$\overrightarrow{E}(x,t)\:=\:6.0cos(1.14\times\:10^7x-3.34\times\:10^{15}t)\overrightarrow{z}$
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 aa1+,b) aae3 t5 srw usxfc 6qwe9vzo47n electric field given by the expression (in Cartesian co1,zras qwt+abx3ae6e uo csvw)5f 947ordinates):
$\overrightarrow{E}(x,t)\:=\:6.0cos(1.14\times\:10^7x-3.34\times\:10^{15}t)\overrightarrow{z}$
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 hclf6q u..afp8as a magnetic field given by the expression (in Cartesi.ff .l8ca up6qan 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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