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习题练习:Physics Unit22: Electromagnetic Waves



 作者: physics   总分: 35分  得分: _____________

答题人: 匿名未登录  开始时间: 22年08月28日 10:07  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  
  The basic equations for all electromagnetism were developexbh u-*jozo4-x:( yi2dm hk9xd by

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2#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An electric field is producust(/tsr2kw57(2orfs:yk oh ch2g 8 yed by a

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3#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A changing electric field will produdu27f)y2 erg yce a

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4#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  All electromagnetic waves travel through a vacuum9i+qs y9hn4re at

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5#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  In a vacuum, the veloce 2 g3jz8ra/ru9taf r,a-t;xv ity of all electromagnetic waves

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6#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Electromagnetic waves can travz szllq73w, us1cqbl9c ; ee59el through

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7#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The strength of both the electric and mjb)qxjti- y nt1u roodgs2+. jm:b,+ )agnetic fields in the radiation field are found to decrease with distance aq-+))xtnj+toom,1diu. s: bj r2gyjbs

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8#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The $E$ and $B$ fields in electromagnetic waves are oriented

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9#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An electromagnetic wave is 2baxg gv9 ,mmjsah 69 (0fasa.traveling to the east. At one instant at a given point it9jh v. sag0f(s x,69a2 ammbags $E$ vector points straight up. What is the direction of its $B$ vector?

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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An electromagnetic wave is radiated by a str xo4oe,apt .8qaight wire antenna that is oriented vertically. Whet a.4o8pqox ,at should be the orientation of a straight wire receiving antenna? It should be placed

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11#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Electromagnetic waves arq0h2x ;jc; jhxe

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12#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Of the following, which is not electromagnetic in jq2w igeh9/,-3 mcdbgnature?

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13#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Visible light ranges ieu6o/ d9e4e tsn wavelength from

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14#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The energy an electromagnetic wave transports per ue)cqd g w-s2)2cs b/lc2ts1mrnit time per unit area is the2dc ws 21)s2ercq/tbcms gl-)

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15#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The force per unit area exerted by an electrom7wi9d+tqe 4r xal h.9fagnetic wave is called the

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16#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Which of the following correctly lists eleaalph45sy4q vd884hn jo9 n(hqpf39 r ctromagnetic waves in order from longest to shortest wavelpfq 4h(rayo hldpj9n493485h8 nasqvength?

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17#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If the electric field in an EM wave has a peak vamdr7bl5 y(9. edqnvypw/4,9x-negfroh :) c ylue of 2.0 V/m, what is the peak value of the magnetic fiy-9 r 4ryn5 yvneo:ml(/q9g d ,7p.fxd)hwceb eld?

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18#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the wavelength of light waves if their frequ.:jfy rr +4 62d6knkdk7hnzu jbj-b2l ency is $5.0 \times 10^{14} \; Hz$?

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19#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the wavelength of a 92.9-MHz0vspd4 zpib: 6 radio wave?

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20#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the wavelength of a radio wave signal transmitted amio vy 11p+f(xbj-t0 lt a frequency of 7.2 1(+bfjm0 1y ti-lvopxMHz?

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21#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the wavelength for the carrier wave in the station WBRN 14udm1-rml w3l0 60?

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22#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the frequency of 20 m5yipdwa1g n5a9q,xs7g9 d x h0m 8ovj0m microwaves?

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23#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  How far does light travel in 1.4uc5qg kz/cx.90l p yf0 ms?

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24#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  How long does it take light tu-z;vqoqo3n j9 vv0 -+bq *noclc69nyo travel 1.0 m?

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25#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  How long does it take the signanx21 ofkkhi )q y5,z-wl from a local radio station to travel 20 miles?

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26#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  How far is a light year am)l., shyzrmiq6q:w gp 1*o6(the distance light travels in a year)?

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27#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A radar receiver indicates that a transmitted pulse return as an biptw 20/6xlk 5j1 k s/yo5 uv5p-dbgfecho in 20 ms after transmission. How far away is the reflecting obje0idb ws1/y 5-v ku2xbp pj/6tof5k5g lct?

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28#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Radiation from the Sun reaches th: l j, y bat(2nj:x7h;9k*dtz,srohche Earth (above the atmosphere) at a rate of about jro:,k:xhy l (tz *,hn s7djh29a ;btc$1350 \; W/m^{2}$. Assume that this is a single EM wave and calculate the maximum value of the electric field.

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29#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Radiation from the Sun reaches the Earth (above the atmosphere) at a rateq-s+ 8mc pg-ao of abocap qo-gm-+8s ut $1350 \; W/m^{2}$. Assume that this is a single EM wave and calculate the maximum value of the magnetic field.

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30#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the maximum value of the electric field q i 78mod(scm2at a distance 2.5 m from a 100-W light biscd(27mmo 8qulb?

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31#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the maximum val jd4jyo om/6j: s91rknue of the magnetic field at a distance 2.5 m from a 100-W light jj1j64kono rsy m d/9:bulb?

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32#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 15.0-mW laser puts out a narrow beac0 9+ nn 7 7civhfw,qnvjji0*am 2.00 mm in diameter. What is the average (rms) value of n0,f+cnhqiic 7 nwv a0j97 j*vthe electric field?

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33#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 15.0-mW laser puts out a narrow be ,nk 7ijwaf2b6esx9o/rf* *p bam 2.00 mm in diameter. What is the average (rms)fk /fb6pxajwb7sr* 9 oi *en2, value of the magnetic field?

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34#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  How much energy is transported across a f30kq pallst ,-ah,y( $1.00 \; cm^{2}$ area per hour by an EM wave whose electric field has an rms strength of 21.5 V/m?

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35#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Estimate the average power oyum( j:rzj4 b* pypa)+utput of the Sun, given that about $1350 \; W/m^{2}$ reaches the upper atmosphere of the Earth. The distance from the Sun to the Earth is $1.5 \times 10^{11} \; m$.

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  • :
  • 总分:35分 及格:21分 时间:不限时
    未答题: 已答题:0 答错题:
    当前第 题,此次习题练习共有 35 道题

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