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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 relationshzu0).q cf7)5uoooo 2 mmlgpc 6ip for the speed v of the following three electromagnetic0) m7uq6.ol)5c oomgz2cpof u 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 electromagn5i(t9e ;w qixcetic spectrum, rank the following electromagnetic waves in terms of increasing 5(i ct9qex; iwwavelength

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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 travekpdv9kl7+y5)goesq.m ejc1) 8 wqk0zls through vacuum with a wavelength of 400 nm. Which one oy)pk7o+.1z0 vwq)qc95ej8l gd sk mekf 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 eyapl+rujr5 /; lectromagnetic radiation has the least energy per pho/;y lpajr5+r uton?

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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 eldbu hr.z85 iitzm/ h 2)0feqh4 m;+nx5saa/lq ectromagnetic radiation has the greatest energy pe mzzsai)4hq0iuen / 2tb;l5qhra8 +xfhd.m5/r 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 9s,,f wgusir3electromagnetic radiation has the largest msirg9 , fwu,s3agnitude 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?rmgw k5 mljyx,70z914p5nd ct;p;gqv

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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 s* k fs42pq jz6emj)4kltarted broadcasting 78 years ago at 1.31 MHz on the AM dial. What is the approximate length of its radio wa zlm q46p*fskjk j4e2)ves?

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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 ofsbm0hr).r vm/ k+p2 ny the most effective transmitting antenna is equal to one-fourth pmk/r.) 2n0v+sbymrh the wavelength of the broadcast wave. If a radio station has an 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 sc ,oywix85j 5lignal at a frequency of 100.0 MHz. What is the wavelength of the station’s signa5x5,ocw liy8 jl?

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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 follo9c wp5r bf+c:-sv uh:vwing choices best represents the type of electromagnetic wavuch9:wbsfc : rvv +5-pe 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 elebja s-y35(kf dctric field given by the expression (in Cartesian ca k(-d3fs5 byjoordinates):
$\overrightarrow{E}(x,t)\:=\:6.0cos(1.14\times\:10^7x-3.34\times\:10^{15}t)\overrightarrow{z}$
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 Cartem d6cdtvyaco4 8x09zbv1 ,ib1sian coordinate6amdcb9,dvy8 tv40x z1c1oi bs):
$\overrightarrow{E}(x,t)\:=\:6.0cos(1.14\times\:10^7x-3.34\times\:10^{15}t)\overrightarrow{z}$
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 u2 lu;stgi)ktl2k wep96s4 k 0wave has a magnetic field given by the expression (in Cartesian coordinateslt kw9k 2i2);e4p tklu6 s0gsu) $\overrightarrow{B} = 6.0 \times\:10^{-6}cos(2.21\times\: 10^7z − 6.63\times\: 10^{15}t)\overrightarrow{x}$ . 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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