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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 t-/eu d3 y wpimj9h)hobt:ij89ta5h,all electromagnetism were developed 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 u 6q*4:au bickproduced 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 fi b+lx6:nmbd0g eld will produce 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 traimoeb: rm; s6i0qdp5 :vel through a vacuum 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 velocity of all electromagnyzyvjy ib j6uq ;5xa1he:c in(- 6aj(.etic 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 travel througha6f14ylzi k k)

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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 magnetic fields in the radiation field:qzqp/ iq: qa5 are found to decrease wit5aq /i:zqpq q:h distance as

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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 traveling to the eas5hoqee* q. 0xoa0ei9m ,.oevzt. At one instant at a given pointiaoq,ze 9q5 0v o*.mox.0hee e its $E$ 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 radiate iq,wewyn83 c)d by a straight wire antenna that is oriented vertically. What should be the orientation of a straight wire receiving antenna? It should q)8cy wien 3w,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 jpy+0r:mas k d*+3idctt3c1n are

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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 electromagneticfpqse (al7qq0l nl57szp0o 60 in nature?

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13#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Visible light ranges in wavayiz7y.3 ;p e0ap/0 u*5w itzd4 b7kvhqgkn+oelength 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 electro6svydo wd+ /t)magnetic wave transports per unit time per unit area is the 6)y dw+ovts/d

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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 ano 8e mksltb23e1ki v:7 electromagnetic 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 lb; 1 pv-xiy dkexz0,3iists electromagnetic waves in order from longest to shortestv 0b i;de-pyx,zx3ik1 wavelength?

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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 E sr5p)p hp8ra)M wave has a peak value of 2.0 V/m, what is the peak value of the map85ap)s r)prhgnetic field?

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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 ce.7+zu: t bboif their frequency 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-MHz radio r )d v(vwm. vv0u6ciq5wave?

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20#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the wavelength4q+.5nfrs hpv of a radio wave signal transmitted at a frequency of 7.2 +54 qr fs.nhvpMHz?

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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 6d-1syluan6o1460?

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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 mm micrm23tq,;r ocpqu ul7y -owaves?

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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. 16ipmxdg6wp k6/ngo30 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 ligh 2jbf5/(ca5 lkwz9ufyiwv5 wr* ;rh6mt to 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 yfz82u s5co x(signal 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 (the distance light travels in a yeaij7c 7u *pt- mmvn7r.wr)?

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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 echo in i)5rkm/s pk713rdz2xddq+ lx 20 ms after transmission. How far away is thekxq)m+ srxd 5 73dlp1k /izrd2 reflecting object?

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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 the E+kf,h9fj 5g*v v7uxewarth (above the atmosphere) at a rate of abou xe+9 g*7fkw5vvh,j fut $1350 \; W/m^{2}$. 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 atmws7;,w ,/v3f)9dlk,jghstfjpo eah, osphere) at a rate of about st,fod)fh/h 7;v,k,ps lja3 wje9w,g $1350 \; W/m^{2}$. 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 erciiiy5gu;nh/m; ,3ej vi ud +1t t9+value of the electric field at a distance 2.5 m from a 100-W light i,ut9imv5;e / e +d1ji;rhigyn3+ctubulb?

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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 value of the magnetic fiedi: m*1mfx jv1cgk44-s h91 rfjea ,uyld at a distance 2.5 m from a 100-W lu4a1 1-jifm:csh*fx4 jr9,eg1m ykvdight 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 w)oi o16q+roc out a narrow beam 2.00 mm in diameter. What is the average (rms) value of the electric fir )oow1i +co6qeld?

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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 beam 2.00 mm in diameter. What isjx )t/6urue2 : i:ooph1 iae8f the average (rms) value of the magnetic fieldhp):ue6ra e u/xj12fti:8oi o?

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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 )* 1u ko)ti9tgp-byw ikv2dq5 across a $1.00 \; cm^{2}$ 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 output of t.*bn fel2vee3 efar360a hr:fhe 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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