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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: 游客未登录  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 speed v of the following o ;fc5,znp;ufthree electromag5;o ffzn; upc,netic 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 electromagnetic spectrum, rank the following electromj-ajw+ xlj 09 )qk/ba tn2cf*uagnetic waves in terms of9jwl) *-+xkbuja 2 jafc nt/q0 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 a dsct 1o kv 7*xamp731zwavelength of 400 nm. Which one of the following choices best describes this type of radiatzms77o * pa3 vct1kdx1ion?

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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 leastjf 687 6fb:m)odprhd3( vt uveu*zw+y energy per photonw*6ozvhbut + rum :7e d)( d3j86vfpyf?

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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 ty2.bl0rq aov tcp, 6/gxkpmfg7 7sd5s7pes of electromagnetic radiation has the greatest e7msa2k .p67pq7/bgrg0xol 5vscf, tdnergy 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 electromagneticqyoz1ew zz toov*m:2lihfw4 (, +g-k ; radiation has the largest mag1q* h2ol ;wyo(z it,ezk-:vzf +wmog4nitude 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 radio waves?q;93gd xjn o46ykc4du

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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 ipz2st6p1 wi41.31 MHz on the AM dial. Whaip6t1 ps wzi24t 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 t4nwnglatngezg lcb8 6 f-91- 3ransmitting 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 3lgt ng zl-81n-nbaf6c w eg49of 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 broam-*km:/s1tu1sq b cbthh i(0tdcasts its signal at a frequency of 100.0 MHz. What is the wavelengthsth0: ctbmiu*/-k1bq 1(h sm t 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 et s n/ .iga+aye8xg0.e- erf2klectromagnetic wave associated w k+g0.naxy/ter8i2-fe.saeg ith a 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 electric field given by the expreo; lwrp3gq6t;1oey 1/lxkh,pssion (in Cartesian coordinates) q/3e1xlo t y1o;lk;pg,6hpwr:
$\overrightarrow{E}(x,t)\:=\:6.0cos(1.14\times\:10^7x-3.34\times\:10^{15}t)\overrightarrow{z}$
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 el5yqb;)s:b ftjr 6 ivy*ectric field given by the expression (in Cartesiv; i)fr:bjt6yb5*syq an 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 electromagnyu 3 kvc40ok79i:hbfbetic wave has a magnetic field given by the expression (in Cartesian coordinates) :y4fkbu3cv70i 9bk oh $\overrightarrow{B} = 6.0 \times\:10^{-6}cos(2.21\times\: 10^7z − 6.63\times\: 10^{15}t)\overrightarrow{x}$ . 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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