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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 following tr q4o+nd: qu+ygwxwkvd(;6k +9t p:zdhree :;drvnkqy9o k+d4qt(6w+ :+ gup xz wdelectromagnetic 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 electromagnetic spectrum, ras/zruc i+r nolcvin 2w8a +zk1u c8y,*h w4/7dnk the following electromagnetic waves wciucv +s4ni1r z8*aydkhn/7zul+o /r8w c2, in terms 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 9mds-nfzocy,9 fvg 7c *7q*ff6qaby ,of 400 nm. Which one of the foll7q,7f -9*g9f o cca zqdnffy*,bv6my sowing 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 t5z,5xex gh9cmogj u3. ypes of electromagnetic radiation has the least energy3g 5 xg,ou.5e9xh zjcm 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 of electromagnetic radiation mv7t njo07 b,bhas the greatest0b7 v7m, jontb 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 follopjoz r0z4o/x3) uod4zwing types of electromagnetic radiation has the largest magnitude0z4uo4oozd/ )zj x rp3 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+df4h* 1 p,wfgg/pqfcwo uz 3, 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 1.3rzk 0 f7v,kn4f1 MHz on the AM dial. What is the approximate length of its rad7 k0fzkv4,n rfio 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 m:cu:wt hj26scpw* 7xk b:*talost effective transmitting antenna is equal to one-fourth the wavelength of the broadcast wave. Iwtjbhsl: :: 7tac6up c2* xw*kf 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 brm,umn z1pc*;aoadcasts its signal at a frequency of 100.0 MHz. What is the wavelength of the station, ;p1*mmz nuac’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 the typeshcn9 9+ dhox:du;hk( kkw6; o of electromagn: ohh9wsnxkk9d d+c h;(oku;6etic wave 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 (in n90bko5lz/bk.kt c*9 tul7e tCartesian coordi/e 9*.bb7zktnt05t kl lok9uc nates):
$\overrightarrow{E}(x,t)\:=\:6.0cos(1.14\times\:10^7x-3.34\times\:10^{15}t)\overrightarrow{z}$
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 gii1tug 8sqd3thpw; y52ven by the expression (in Cartesian coordina pqhty s;5w3tu1gdi2 8tes):
$\overrightarrow{E}(x,t)\:=\:6.0cos(1.14\times\:10^7x-3.34\times\:10^{15}t)\overrightarrow{z}$
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 fielv)ol ;ynp2)hid given by the expression (in Cniy;)vlh2p o) artesian 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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