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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 correcttg6d 8mk6v6l vmwqj80 relationship for the speed v of the following three electromagnetic waves in vacuum? The waves are : Xl8w6 0 jkd6m6 q8mgvtv-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 4gey1 ag/g; ktspectrum, rank the following electromagnetic waves in termstg aegg 14/y;k 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 thr2i1vr7x:* tik h vxuc(ough vacuum with a wavelength of 400 nm. Which one of the following cvtih7i:2(1xxc *ur k vhoices 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 radiation has the t tk.k /fxhlkv 8vdc:6ayn 31.least energy pe t 1fkyv.8x/ h3t:kvd clak6.nr 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 typeli (o*q* lqqpme84 uf0*k lww1s of electromagnetic radiation has the greatest energ f el( uk mopw*q*w1lq4il0*8qy 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 6z5p8-xkl jjjxg8mv2has the largest mag2gjj6 xp-85mxv 8j zlknitude 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 o;k-n4am-x vmt5kxx 9with 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 ago :b /l-nxr6;c0 l1 nkc rbvgk)rat 1.31 MHz on the AM dial. What is the approximag6:bkbk/l ccv1)rl nr-x n0 ;rte 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 ( xak(hew8skqsz k:3 1 )r6x mrx kdc42x.m1sutransmitting 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 xkmks xx6ar1 qkwcs4z3uexhsrm1 ).(:d k 82(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 atq3u38 hx4beqm a frequency of 100.0 MHz. What is the wavelength of the station’ 3h4bue 8m3xqqs 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 jcl ooy59lqux/o d ,nch:2k88represents the type of electromagnetic wave associated with a frequency of o:qc952o hn8ylu dlk8jo,c /x $10^{18}Hz$?

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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:p;xn *v)leh-sjzp+ rbp 6r(w field given by the expression (in Cartesian coordi-wj+r p 6p;lsnh(ve:) rzbp* xnates):
$\overrightarrow{E}(x,t)\:=\:6.0cos(1.14\times\:10^7x-3.34\times\:10^{15}t)\overrightarrow{z}$
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 Cart qtx *d/3h j ypi(u;rni1iiq1s4i- e4sesian coordinates)uq1 (si - * xjsyi;p/iri4i1tdqh ne43:
$\overrightarrow{E}(x,t)\:=\:6.0cos(1.14\times\:10^7x-3.34\times\:10^{15}t)\overrightarrow{z}$
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 wavqzwjqzx16iukv* hh34*a3 7bze has a magnetic field given by the expression (in i3*b3*h qz14h q 6uvjkzwzx7aCartesian 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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