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习题练习：Wave-EM Wave
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 作者: admin  发布日期: 2024-07-31 22:50    总分: 14分  得分: _____________

答题人: 游客未登录  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 fog 2x3y plgy0+x wog)7p(r zf2bul 8;bpllowing three electromagnetic waves in vacuum? The wavesb g3lgpr bu;72w(p)zxgfyylpo x2+0 8 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 electromagnetsql :;95h70acyb;u+ f dja xzxic spectrum, rank the following electromagnetic waves in terms of increasing wavelengts+u byxj aah79xcfqd5 0l;;z:h

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3#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  12.06: Electromagnetic rado6wjw 2f7i yu)y um7a6iation travels through vacuum with a wavelength of 400 nm. Which oouy w6awm fijy)u772 6ne 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 kot)c jj8 wql.6iws0tq*1c, q*bttw(following types of electromagnetic radiation has the least energy per phjq*tt w),t okc 0*qwi1 q8bt slj6(w.coton?

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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 radi1g:2 c16jsf ruez pjezb2+2 alation has the greatest ej2s2ablzeg 1+e1frj: pz cu62nergy 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 elec.:2ullq o (vejg0c :nttromagnetic radiation has the largest mt:cnl2eu0v (j. :oqglagnitude 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 bdwz6x;pat, .f roadcasts 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 statitt6sux 2/blz 9)()ojri ln d..fpsx (bon KFKA started broadcasting 78 years ago at 1.31 MHz on the AM dial. What is the approximate length of its radio wave 2ui (b6dp/s xlz sn t9j.xt)(lof.)rbs?

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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 efa ;gaf iby1wtp( lmhdi) +2m57fective transmitting 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 the rad2; bl7(i agym1h)i+t pw md5faio 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 fq gt5,jdz19qq (w,ivnrequency of 100.0 MHz. What is the wavelength9jqtdqg ,zn1 5vqw,i( 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 following choices best repreyg bdn18uw4 1mk4fuc(sents the type of electromagnetic wave associam 1n4ybuc 8gkuf(1 4dwted 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 gi5eb b nvj)s.p.ven by the expression (in Cartesian coordinates): v.bsnep5.b)j
$\overrightarrow{E}(x,t)\:=\:6.0cos(1.14\times\:10^7x-3.34\times\:10^{15}t)\overrightarrow{z}$
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 Carte2 +ipm7hrnp7r sian c+pph in 2rr7m7oordinates):
$\overrightarrow{E}(x,t)\:=\:6.0cos(1.14\times\:10^7x-3.34\times\:10^{15}t)\overrightarrow{z}$
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 by theybwbbc 7pc os6*:;o 6c expression (in C cco7b6o6wp;*:ybc sb 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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  • 姓名:游客(未登录)
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    总分:14分 及格:8.4分 时间:不限时
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