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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 t ),q )bnxtq8mk ;0 nxslsqc0.mhe speed v of the following three electromagnetic waves in vacuum? The waves are : X-rays, UV rays, microwaves. csmsk,nqm;)bt 08qn. xx)l0 q

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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 followingi2 dca cfif7 9r+3k+1h)uvst g electromagnetic waves in termh1dcigu i +s)9vt2c a73rff+ks 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 a wavelength * ;-ofmfz fwfd6a6,eaof 400 6dfa6 ;f,a*zew m- fofnm. Which one 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 of electromagnetic rao src-rosc/ 18diation has the least energy pec ocr-r 1os/8sr 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 7n2npeb yir (1xz2 h0;tei -cvof electromagnetic radiation has the greatest energy per photon?1 v b(nhc-ix 02etz7 ye2nirp;

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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 largest*ptk fwc5 h*pvi/ 6*kav**c 5a*tk/i p6pw kfh magnitude 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?816exx9 kikjl

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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 broadawx8mpsy(jq 2g9 0xa0casting 78 years ago at 1.31 MHz on the AM dial. What is the approximate length oxpqa8ym 2 s0g(9w x0jaf 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 antenna is em0w4xnf xkp 3;2 rwhl.qual to one-fourth the wavelength of the broadcast wave. If a radio station has an0 xw4 n2.;flphmw3 rxk 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. Wha47/ sj0rm fzs-+g xab;u4fwsr t is the wavelength z jgsf/;samuxbr04wr4s-f+ 7 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 4 gktv87p pf,se 1,gyzthe type of electromagnetic wave associated with a frequg4v z1,7ks yf 8gpep,tency 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 exprenl8a: 244zp p wqr xvcs)gn+4vssion (in Cartesian coordinates): 4pg42z4lvxw 8:npsn)vrqca +
$\overrightarrow{E}(x,t)\:=\:6.0cos(1.14\times\:10^7x-3.34\times\:10^{15}t)\overrightarrow{z}$
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 the expression (in tz2 mv b ldwczl1d5-)2 wr+s7xCartesian cwdvx2zl+w b57m 2d 1lt)z-src oordinates):
$\overrightarrow{E}(x,t)\:=\:6.0cos(1.14\times\:10^7x-3.34\times\:10^{15}t)\overrightarrow{z}$
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 b8iegu,m ac)eymd8s30 y the expression (in Carta gi0)8d,sec8 uemym 3esian 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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