51fly国际课程 (51fly.win)

 找回密码
 立即注册

手机扫一扫,访问本页面

 

      

上传图片附件

未使用图片

小贴士: 允许的图片文件格式为: gif, jpg, jpeg, png, webp,上传完成后会在上方生成预览,用鼠标连续双击缩略图,或拖动缩略图,该图片就被绑定至本题,显示在题目下方

本次作答已使用

小贴士: 此栏目显示的是当前作答使用的所有图片,绑定到某一题目的图片同时会显示在该题目下方; 删除使用的图片会将其转移到<未使用图片>类别


习题练习:Physics Unit22: Electromagnetic Waves

 作者: physics   总分: 35分  得分: _____________

答题人: 游客未登录  开始时间: 22年08月28日 10:07  切换到: 整卷模式

标记此题
1#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The basic equations for all electromagnetism were develop.vv(q(; c eizgt(2sws rbpf0) ed by

参考答案:    

标记此题
2#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An electric field is r ;0o 2 5gg7tjcdlxt/tproduced by a

参考答案:    

标记此题
3#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A changing electric field wiyd49ha.gir v. jkps2 /ll produce a

参考答案:    

标记此题
4#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  All electromagnetic wavemvbdyo7rb,8( 1 wrk 8hs travel through a vacuum at

参考答案:    

标记此题
5#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  In a vacuum, the velocity of all elec uv bd;(fg*6 ;g.17ccjy cywmztromagnetic waves

参考答案:    

标记此题
6#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Electromagnetic waves cajgm ;-dzd3.n ui2mlj/n travel through

参考答案:    

标记此题
7#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The strength of both the ele(/ b6 z3w/j r2eafzbzectric and magnetic fields in the radiation field are found to decrease wjf/we 2 ea6b z(rzzb/3ith distance as

参考答案:    

标记此题
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

参考答案:    

标记此题
9#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An electromagnetic wave is traveling to the east. At onehhzgkj c;-8p*(8oh p y:j1anc instant at a given point its: h;z jg8khpjon* y -cac8p(h1 $E$ vector points straight up. What is the direction of its $B$ vector?

参考答案:    

标记此题
10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An electromagnetic wave is radiated by a straight wire antenna that is oriented pbf8w9s nu (iqhm56n( vertically. What should be the orientation of a straight wire receiving antenna? It should b 65qb huinw(s8mp(f9ne placed

参考答案:    

标记此题
11#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Electromagnetic waves )gofr.+bzwp4 4c wl*hare

参考答案:    

标记此题
12#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Of the following, whic9n5vhtpdut r*3cwpp0f2c * t-ik/3h th is not electromagnetic in nature?

参考答案:    

标记此题
13#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Visible light ranges in wavelenwp wd-n 9ki1mg2* qqha-gb*drj92:ltgth from

参考答案:    

标记此题
14#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The energy an electroma3i. e-fadbd.xdm neergp8 ;mt v7x1/; gnetic wave transports per unit time per unit area is thedd- vdre.a7 m f/38;metgnexi; .1xpb

参考答案:    

标记此题
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 electromary - 17zomatz/gnetic wave is called the

参考答案:    

标记此题
16#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Which of the following correctly lists electromagneticnjx59:2 2bbst xhr6rp waves in order from longest to shortest wavelex:rh69pr 2bj stx n25bngth?

参考答案:    

标记此题
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 value of 2 qp8hfsm//f xfuvd5 37.0 V/m, what is the peak /qxfpu5d / mhvf783sfvalue of the magnetic field?

参考答案:    

标记此题
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 frequry:mkx aa/ u(-ency is $5.0 \times 10^{14} \; Hz$?

参考答案:    

标记此题
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-MHz rmkvs o/w ib6i (s0-dvoom49w. adio wave?

参考答案:    

标记此题
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 tranwc jui /9,v e0u d:o.hhctf+f*smitted at a frequency of 7.2 MHz?0 t* hu9cedwfuv,+ if:.hoj/c

参考答案:    

标记此题
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 they+ g/0es 9fyq-yzpuvxrk-4r 7 station WBRN 1460?

参考答案:    

标记此题
22#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the frequency of 20 ,coq, +lrekp0oed)9b mm microwaves?

参考答案:    

标记此题
23#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  How far does light travel .po3u .pkhcmy ck3f,9 in 1.0 ms?

参考答案:    

标记此题
24#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  How long does it take light to travel 1.0 e/3025h kkn.t uq4spgeuw 6ii8kzg i:m?

参考答案:    

标记此题
25#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  How long does it take the signal from a local radio statiyfvxds(: 0xoo1 flt)ceo;f 1 3p+lzx,s/v qx: on to travel 20 miles?

参考答案:    

标记此题
26#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  How far is a light year (the dci nm49:pdu)kwk- i;kj4gv 9iistance light travels in a year)?

参考答案:    

标记此题
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 abo5 jz:)rptn socid0/v-o3;ms an echo in 20 ms after transmission. How far away is the reflecting rn;d0mzt3i o/ -s :ovb)jo5pcobject?

参考答案:    

标记此题
28#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Radiation from the Sun reaches the Eargft 4d s+7(appth (above the atmosphere) at a rate of about p7 (dg4+fsatp$1350 \; W/m^{2}$. Assume that this is a single EM wave and calculate the maximum value of the electric field.

参考答案:    

标记此题
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 atma*x n7k gce4u k8q3i d+r7xs-yosphere) at a rate of about d cgqren- x*xu4iks37 k7a+8y$1350 \; W/m^{2}$. Assume that this is a single EM wave and calculate the maximum value of the magnetic field.

参考答案:    

标记此题
30#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the maximum value of the electriczn6mh1of yexx5(* + ff field at a distance 2.5 m from a 100-W l51fo* x(+6efmnzhy xf ight bulb?

参考答案:    

标记此题
31#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the maximum value of,o e bb47jxh1o;ol chs, f*va6 the magnetic field at a distance 2.5 m from a 100-Wc*;ob a1 7 hsl4, hojvef6,bxo light bulb?

参考答案:    

标记此题
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 beam 2.00 mm in diameter. What is the al 5t,uetpz8+b1 dx65 wl y pd*8ch,evqh rw,,dverage (rms) valu,vtw qur,dll1h,t5zw 6b, deph8 pc8x*yd5 +e e of the electric field?

参考答案:    

标记此题
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 beam 2.00w,wn1qi: 9 qedf6j zg9 mm in diameter. What is the average (rms) value of q:w,wi6q99n1jz deg fthe magnetic field?

参考答案:    

标记此题
34#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  How much energy is transported 9 v+jksy(l y +w7wglg;,sm 7haacross a $1.00 \; cm^{2}$ area per hour by an EM wave whose electric field has an rms strength of 21.5 V/m?

参考答案:    

标记此题
35#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Estimate the average power output of the a08z 0 z, +cxzpiixb-e+ligx3Sun, given that about $1350 \; W/m^{2}$ reaches the upper atmosphere of the Earth. The distance from the Sun to the Earth is $1.5 \times 10^{11} \; m$.

参考答案:    

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
本平台(https://51fly.win/)支持练习,作业与考试(自动评分)三种模式,群组成绩统计排序导出,题目动态变量实现同卷千人千题
如果您对本系统感兴趣,想加入我们或者想进行任何形式的合作,请加微信 skysky1258

浏览记录|手机版视频|手机版试卷|使用帮助|51fly国际课程 (https://51fly.win)

GMT+8, 2026-3-22 06:15 , Processed in 0.327233 second(s), 112 queries , Redis On.