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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 6 d8 xewr7*: goqcpu,lsy; a-srelationship for the speed v of the following three electromagnetic waves in vacuum? The waves arl,8c rpyuwo;gdas -s7 6:q*xee : 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 ev6(sa/5lu zerlectromagnetic waves in terms of r6zevs/u5 (la 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 w8gpg4emzq t /)42l zpz. 9graoith a wavelength of 400 nme9gq2/ .tza g)rl z4pzg o4p8m. 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 electromon*8j zqq8 fk7h0slh 2 3(ybeoagnetic radiation has the least energy( q3f jh878oznsel0 ky oq*b2h 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 oh/dpq(0 u)li oejhip.7t z)3t f electromagnetic radiation has the greatest epqhoh p)t3dleu t/i(i07j) z .nergy 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 typekw ,8s ary18ifkks)a:s of electromagnetic radiation has the largest magnitude of momentum per photon?8is s:rwfk, 1)ka8kay

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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 1wvr(q+ eqe*e broadcasts with 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 ye+mkw,v;-;4a yqe hnr.1o7b cc.mtg w hars ago at 1.31 MHz on the AM dial. What is the apm7 r+k4h;t,w 1. -vbch w;y ngoq.eacmproximate 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 t 7abl;n2 zpb3pransmitting antenna is equal to one-fourth the wavelength of the broadcast wave. If a radio station has an antenna 4.5 meters long then w b; lnab273zpphat 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 freque (;2tska0 z./kdgwxr o y(ftb4ncy of 100.0 MHz. What is the wavelen.0(to/kykfz 42 x d(rbs tg;awgth 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 f0f,jba;z3 mus577yrmvv z tfd8v bk2+ollowing choices best represents the type of electromagnetic u0mzv357 bjz 8dt ar;b f,fk +v7msv2ywave associated with 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 expression huc vzi13 v;p+(in Cartesian cov;ucz +pv3h1iordinates):
$\overrightarrow{E}(x,t)\:=\:6.0cos(1.14\times\:10^7x-3.34\times\:10^{15}t)\overrightarrow{z}$
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 fie/ f9 ql80tlkgtu es;f-ld given by the expression (in Cartesian coordinatelkq;t8tu9 f /lgs-f0es):
$\overrightarrow{E}(x,t)\:=\:6.0cos(1.14\times\:10^7x-3.34\times\:10^{15}t)\overrightarrow{z}$
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 byfeod*e7 2 xhtva,vo /2 the expression (in Cartesian coordinate 7fo22 edx/v* toeavh,s) $\overrightarrow{B} = 6.0 \times\:10^{-6}cos(2.21\times\: 10^7z − 6.63\times\: 10^{15}t)\overrightarrow{x}$ . 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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