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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 the speed v of the followingwmq; rlq1 ax;d oeb6-0bq dgsn*kz*16 three electromagnetic waves in vacuum? The waves are : X-rays, UV *xr nzw*kbdd-11 ;gom; 6lqasb6e0qqrays, 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 fo8dvv h- kg wxt9 e:t9(:fdch2 usi.0iwllowing electromagnetic waves in terms of increact92k f:w8vd .tuh9gi: die-hv0(sxw sing 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 cd.42gphbdq2 with a wavelength of 400 nm. Which one of tpdhdgq 2cb24.he 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 t8vz-j.d:uywrcq84.r.u wctlw7 stm 9ypes of electromagnetic radiation has the least energy p: dv.rtqscyc-7l jt. 4.www mruuz898 er 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 typeaewi)f yy;. im1;f) ho9 stjd) ow-+dy)cep7 ws of electromagnetic radiation has the greates9iow7 eimft) e);j yaw ydy;w1 do ).f)s-chp+t energy 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 radixsv)e m )j5rl4sd:j 8kation has the largest magnituder sk) :s)e45v jj8dxlm 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 broadcastseysd d2/v+8t3wf ryt ,9ox2wz 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 years ago at 1j1irr0albtu 7 7pc2ig zj-. 4s.31 MHz on the AM d4 7cjil.b1us2 zjra -ri7pg0t ial. What 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 transmitting antenna is equal to one-fo8qj)zvotwgjxh npr1 ,(or5 5) q,l/grurth tqr5hjj1 ,8x,q)( pn)wtor gg5lvz/rohe 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 broadcastsf bck2 6r+*t(rlvh :du its signal at a frequency of 100.0 MHz. What is the wavelength of the station’s shd 2(l6br+cf*vk u :rtignal?

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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 elee4x+vcdi8 )xq ctromagnetic wave associated + qidx8c)x ev4with 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 f robibe*) -.fkield given by the expression (in Cartesian coordinates):.) bfe k-iro*b
$\overrightarrow{E}(x,t)\:=\:6.0cos(1.14\times\:10^7x-3.34\times\:10^{15}t)\overrightarrow{z}$
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 a(w/dte ibxa*hnh l-+4n electric field given by the expression (in Cartesian coob-h4/i(ta xedwl+* nhrdinates):
$\overrightarrow{E}(x,t)\:=\:6.0cos(1.14\times\:10^7x-3.34\times\:10^{15}t)\overrightarrow{z}$
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 at:db,fnm gujy4tf 5 6l/*a ks; magnetic field given by the expression (in Cartesian coordm *nka 6b/, fjysfd4:ltt;gu5 inates) $\overrightarrow{B} = 6.0 \times\:10^{-6}cos(2.21\times\: 10^7z − 6.63\times\: 10^{15}t)\overrightarrow{x}$ . 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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