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习题练习：Physics Unit12: Sound
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 作者: admin  发布日期: 2022-09-26 09:56    总分: 87分  得分: _____________

答题人: 匿名未登录  开始时间: 22年08月07日 09:59  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  
  Which of the following is a false statec*a0 fgrj z:9e yr0/ikment?

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2#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  In general, sound is conducted fastest throu hnmwd0: w;0bkgh

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3#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the speed of sound in a steel rot buhz 0j+i08pd?

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4#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  As the temperature of the air increases, whatjnf8 i:s34 txb happens to the velocity of sound? (Assume njisf b8x:3t4 that all other factors remain constant.)

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5#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Compared to the velocity of a 400 Hz sound, the velocity onmd. zaxcs5(kxma y09uy4.z7yh t + 2pf a 200 Hz sound through airun t 2yh7za+d9yxx (.mmpz 4csk a0y.5 is

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6#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Compared to the wavelength of a n:qwtmdif,6 i0ng lh8h: /(eb400 Hz sound, the wavelength of a 200 Hz sound in g:t hfmiwn 8i hqdn0(bl,/:6 eair is

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7#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Sound vibrations with frequencies greater than 209aqa7pfwq pow* t4 qes* ,k6a.,000 Hz are called

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8#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Sound vibrations with frequency less than 20 Hz are calle dg p,kkyeb;oit)ho.p b +3h:3d

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9#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Suppose that a sound source is emitting waves uniformly in all directions. d/a w:zy.,igg64f4v ab wa*t dIf you z6ad .t*4v abyi,:f4 ww/ aggdmove to a point twice as far away from the source, the frequency of the sound will be

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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  For spherically diverging waves, intensity is proportional tog9qez ,xte; l5

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11#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The intensity of a point source at a distanceik4vx-z2c2i + -ss q om:kcd-m d from the source is I. What is the intensity at a di4 -dz-ksmckiimo2xv: c2q- s +stance 2d from the source?

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12#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  You double your distance from a sound source that is radiating equally in al2f;srq w 9-fvel directions. What happens s;f9ef-w2 rvq to the intensity of the sound? It reduces to

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13#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  You double your distance from a sound source that is radiating 4f wgn,;wg7orjzkz9m *.d1za equally in all directions. What happens to the intensity level of the sound? It dwg;zna7zfd1gz.4 , jm *wro9krops by

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14#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Which of the following increases as a sound becomes louder? e:u + :u+ge74sgijlzc

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15#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  You move slowly toward a speaker emitting a pure tone. lsu: rrg knnm:d 4cv-m-q6j o1bd(( *zWhat characteristic of th jls b*-(mnv r4- qzk (:g:nc1rdd6moue sound increases?

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16#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What determines "loudnes8 3te0ln)kseu s" of a musical note?

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17#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What determines the "pit8vtq*opfad3bkq a b:0 mm5 ;a(ch" of a musical note?

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18#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When sound passes from air int ey :ek, v6fanpq+xy8em+k vuy -b0s:6o water

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19#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Pressure and displacemk,u 3r 7w01fqmnuatygffn75- ky w5 x5ent waves are

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20#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Consider the standing wave on a guitar string and the sound wax-u+d f0ur);kh8jye x ve generated by the guitar as a result of this vibration. What do these two waves have in co-8x+jy0kxr); d hu fuemmon?

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21#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  In a resonating pipe which is open at both ends, they3ec bz 7ear02re

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22#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Consider an open pipe of length L. What are tv.-myk igm8+ khe wavelengths of the three lowest tones produced by this pipe?mk.y8mv -+ikg

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23#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The lowest tone to resonate in an open pipew .855mod42 0qjlljlsv x:fgo of length L is 200 Hz. Which one of the following frequencies will not resonate in the same piomv8.5 x5 f 4l02s qgjdlwjlo:pe?

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24#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An open pipe of length L is resonating at its fundamental frequency. Whi8k)w+w odi- /yi esu5vch statem ekw8+dws- iiuv5/y o)ent is correct?

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25#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  In a resonating pipe which is opgxqtvvstg 8ar,t 03p4j. 4wk*en at one end and closed at the other, there

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26#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Consider a closed pipe of length L. What are the wavelengths of the th up0x5(jo+v1pjew)fg ree lowest tones produced bge )0+f1v u5wp(j joxpy this pipe?

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27#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The lowest tone to resonate in a closed pipe of lengtt4b8x zn2yd,;v9 abq rh L is 200 Hz. Which of the following frequencies will not, b4tyr82vz bdn9 x;aq resonate in that pipe?

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28#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A pipe of length L closed a0wo 3 ubn.2e*gq2 xvk0e*db ext one end is resonating at its fundamental frequency. Which statemew3e*20e 0x.bud bvn x*qko2gent is correct?

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29#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A person stands betweend*t3bkd:* a b4s plq8imae*c3 two speakers driven by the same source. Each speaker produces a tone with a frequency of 200 p:k*a q34c d ldt3*e*bbmsi a8Hz on a day when the speed of sound is 330 m/s. The person is
1.65 m from one speaker and 4.95 m from the other. What type of interference does the person sense?

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30#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  In order to produce v/13ka 33fwg.j bdwi;uby .aevi6os3beats, the two sound waves should have

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31#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two pure tones are sounded toget :sjy7 p1zl7fw+ 6jimoher and a particular beat frequency is heard. What happens to the beat frequeoy: j76jfpism1+7lw z ncy if the frequency of one of the tones is increased?

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32#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The Doppler shift expouid .l2ux6vvy8wsxf( i7 +k4 lains

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33#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A sound source approaches a st 5s6t/vb;ywyr xv p+j*m)c y6qationary observer. The frequency heard by the observ 6my+j5 t*)byqsrpv cw 6yxv/;er is

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34#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A sound source departs from a pgw1cfrym+d/ls ,9bf5k +(g kstationary observer. The frequency heard by the obser b k/kg5 f 9lryfmcg,(wd++p1sver is

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35#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If a jet plane were to double its MACH-speed, its half-angle will decreas;r8c1zul ibe9 d de/0be by a facreu;d9b d8bl10iz c/e tor of:

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36#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The speed of an ultrasonic sound of frequency 45 kHz in air is 3 yp(3b3 w6 vlcpxji1g;52 m/s. What is the ;1lcpyb3wx(gv 6ip3 jair temperature?

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37#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the ratio of the speed of soundki*x n zg25db.f( 2fgd in air at $0 \; ^{\circ}C$ to the speed at $100 \; ^{\circ}C$?

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38#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  On a day when the speed of sound in air i w*u8-ya )zdh dqrfs9pw,)wb335k xcms 340 m/s, a bat emits a shriek whose echo reaches it 0.0250 s later. How far away was the objumrc wz3 b9wkfdd)px8)3a - s,* 5hwyqect that reflected back the sound?

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39#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  You shout at a cliff, and hear the echo in 4.0 w*e htjy7r1(d0 s. The temperature is $0 \; ^{\circ}C$. How far away is the cliff?

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40#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If you hear thunder 5.0 s after seeing a flash of lightnu3iilf*.w m0qing, the distance to the lightning str.iq*uf3 wi 0mlike is about

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41#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An echo is heard 2.0 s from a cliff on ,s0bx naw6 ju0a day the temperature is $15 \; ^{\circ}C$. Approximately how far is the cliff from the observer?

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42#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  On a $30 \; ^{\circ}C$ day, there is an explosion. The sound is heard 3.4 s after seeing the flash. How far away was the explosion?

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43#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  You drop a stone into a deep well and has26e* gwx x4rear the splash 2.5 s later. How deep is the well? (Ignore air resistance, and assr6x gxe 24*sawume the velocity of sound is 340 m/s.)

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44#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The wavelength in air of a sound wave of frequency 500 Hf8:o5c r*mmq rz is

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45#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Sound traveling in air atpx w0no*r f,;w $23 \; ^{\circ}C$ enters a cold front where the air temperature is $2 \; ^{\circ}C$. If the sound frequency is 1500 Hz, determine the wavelength in the warmer air and in the colder air.

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46#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the intensity level of a sounde ; 7 kotbg8the4) qfd7i./dxv with intensity $10^{-3} \; W/m^{2}$?

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47#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the intensity oi xds* 9tq9m5g . /jh0.neuq2 8+asrzdwcj:erf a 70-dB sound?

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48#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the ratio of the intensities of two sounds withqc 6nwlscw99w r0-)ve intensity levels of 70 dB 9c0)l rvwesw-w9cn6q and 40 dB?

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49#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The intensity level owk 0s4 93,mgpxqedt25 xmzm2 by 15 engines in a garage is 100 dB. What is the intensity le 4w5e3 s m x20,2mpm9xoqtzgdkvel generated by one engine?

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50#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The intensity at a distance of 6.0 m from a source that is radiatsh-ll35c2ze ztf- p)xj m5hx9ing equally in all dir3t zpm-shj xlheclf2z)x 55-9ections is
$6.0 \times 10^{-10} \; W/m^{2}$. What is the power emitted by the source?

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51#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The intensity at a distance bor38++kmrpc vjr-yz4jb4 7tof 6.0 m from a source that is radiating equally in all dirr4+3 jjzr p+- 4vtbcbok8my 7rections is
$6.0 \times 10^{-10} \; W/m^{2}$. What is the intensity level in dB?

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52#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A barking dog delivers aboux3 8-cu.e kehqy fn5*mi;m2d dt 1 mW of power, which is assumed to be uniformly distributed in a m8d2 .fdhqiek -e5yu;c*xm3 nll directions. What is the intensity level at a distance 5.00 m from the dog?

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53#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The intensity level is 65 dB at a distance 5.00 m from a barking dog. Whafsx9n6kq t *(eh+m 7ngt would be the intensity level if two identical dogs very9tenm 76*knfgs qh(x+ close to each other are barking?

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54#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  At a distance of 15 m from a sound source the intensity leve)h p; qs.f7cnzvrf (8tl is 60 dB. What is the intensity level (in dB) at a point 2.nc zh rtq(.s8v)p;7ff0 m from the source? Assume that the source radiates equally in all directions.

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55#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The sound intensity levbtbk.z27, y psel 5.0 m from a point source is 95 dB. At what distance will it be 7 tz.k, bspy2b75 dB?

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56#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The third harmonic of a complex tone q82wr wu1ga snpn on mx1:c c18z)1d6chas a frequency of 1200 Hz. What is the frequen n:)1pcwmqr 8ccu1nn w1szad gx862o1cy of the fourth harmonic?

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57#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The frequency of the third harmonic of an open pipe is 9o29 tz i oluc0j2szh,.2xgw f.00 Hz. What is the lengzs o9,gu.j fwzx. 0l 2tic22ohth of the pipe?

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58#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The lowest tone to resonate in8: c8fm o;xx7f1mkzwy an open pipe of length L is 400 Hz. What is the frequency of the lowest tone that will resonatk; zx foy: m17wfcm88xe in an open pipe of length 2L?

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59#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An organ pipe open at both ends has a length of 0.80 bcu2b,xz /g8f m. If the velocity of sound in bu8b czf/ 2g,xair is 340 m/s, what is the frequency of the second harmonic?

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60#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 3.00-m long pipe is in a room where the temperj xjy16uge t 95)i:tusj.j 3ovature is $20 \; ^{\circ}C$. What is the fundamental
frequency if the pipe is open at both ends?

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61#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The fundamental frequency in a pipe closed : (c:s+qe xugvf8b7l /;pskwa at one end is 330 Hz. What is the frequency xle scs:gb:awpk;8fq+u( 7 /v of the third harmonic?

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62#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the length of the shortest pipe closed on ocz 4qio3/by 6zne end that will have a fundamental frequency of 3yzi6/bzqoc460 Hz on a day when the velocity of sound is 340 m/s?

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63#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 3.00-m long pipe is in a room where thee/xvh3s o p(0,n(ue re temperature is $20 \; ^{\circ}C$. What is the fundamental frequency if the pipe is closed at one end?

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64#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 3.00-m long pipe is in a rooi 0 o0r*,5oe ujnml*qbm ua5d:m where the temperature is $20 \; ^{\circ}C$. What is the frequency of the second harmonic if the pipe is closed at one end?

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65#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A closed organ pipe of length 0.75 m is played /0drewa(tw pe ,u**a+gc h xolfe:k 05when the speed of sound in air is 340 m/s. What is the (dr tuewaea0plx: * k*o+w,0hfe5cg/ fundamental frequency?

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66#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Consider two pipes of the same length: one is open and the other is closed h1a 8h +rn 7h9a;terplmrc.7gon one end. If the fundamental fre;r+r7p t7 1h.hng9aelc8hra mquency of the open pipe is 300 Hz, what is the fundamental frequency of the closed pipe?

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67#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two adjacent sources each emit a frequency of 800 Hz in aj4fk:lu5 2naecsv q2- ir where the velocity of sound is 340 m/s. How much farther back would source 1 have to be mov s-v n24lu:e f5kjacq2ed so an observer in front of the sources would hear no sound?

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68#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two speakers are placed side by side and driggr 5xhu.hexhw,:9+7jm a2f nven by the same frequency of 500 Hz. If the distance from a person to one speaker is 5.00 m and the person detects little or no sound, which of t 9ug2e hw .gx5hfmj+ran:7hx,he following is a possible the distance from the person to the other speaker? (The sound speed is 340 m/s.)

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69#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two tunes have frequencies of 4vs4l -(pfj8n-o dr4ousg i,n/d os t0myl*c1840 Hz and 444 Hz. What is the beat frequency?

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70#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A music tuner uses a 550-Hz tuning fork to tune t2cwx * jxn y3q7-, e((,fjisvdsquas 3he frequency of a musical instrument. If the tuner hears a beat frequency of 2 Hz, what is the frequency (cx 7*swjnqde3vfuy(xis2jqa, -s ,3 of the instrument?

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71#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The wavelengths of the sounds * psns3+ os.vrproduced by two horns are 6 m and 7 m respectively. What beat frequency is heard when the horns are sounded op3 s.vo* ssr+nn a day when the velocity of sound is 340 m/s?

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72#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The corresponding violin strings on two violins in an orchei-c:;o6;9*bmda gd tdlp dh .ostra are found to produce a beat frequency of ld- m6ca ;d;:9pbd iho d.tgo*2 Hz when a frequency of 660 Hz is played. What percentage change in the tension of one of the strings would bring them to the same frequency?

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73#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An observer approaches a stationary 1000-Hz sound sourbe ; f,36f;mu1-ej jvqoro4lpce at twice the speed of sound. The ob4- j,;;eo3 mvf6 f1jrlqpouebserver hears a frequency of

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74#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A sound source (normal frequency of 1000 Hz) ap2c kagkyq6*zst)y +d8proaches a stationary observer at one-half the speed of sound. The observer hears a frequen 6y z8)k*+ka 2tygdqsccy of

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75#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A sound has a frequency of 1000 Hz. If a .g0yby:gn 2m clistener moves with a speed of 30 m/s away from the source, what is the freque 2yb:ymg.nc0gncy heard by the observer? (The sound speed is 340 m/s.)

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76#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A police car has an 800-Hz siren. It is traved pcdozlzyw6d*1j ,+i7q; u :kling at 35 m/s on a day when the speed of sound through air is 340 m/s. The car approaches and passes an observer who is standing along the roadside. Whdu:pzyod6* +k 7lw1i;d,q zjcat change of frequency does the observer hear?

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77#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the frequency heard by a stazxpjq,b7-pwxrd,dn bh191yvy /(0x ntionary observer when a train approaches with a speed of xd1nppj,wn7 brv(d ,/yz by0x9xh1-q30 m/s. The frequency of the train horn is 600 Hz and the speed of sound is 340 m/s.

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78#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A train is traveling toward you at 120 km/ +bw e,g.nskv0h. The train blows its 400-Hz whistle. Take .ke gwnv0+,bs the speed of sound to be 340 m/s. What frequency do you hear?

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79#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  You are moving at 120 km/h toward a stationary train. The train blows i98;-5m umqvd1z n b1plkd nal*ts 400-Hz whistle. Take the speed of sound to be 340 m/s. Whab*man-n5 dp ;1dmv1zu98ql k lt frequency do you hear?

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80#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A train is traveling away from you at 120 km/h. T9c f)p bkl0 zk(iab:s5he train blows its 400-Hz whiss9k i 0a: lfb(5pkbcz)tle. Take the speed of sound to be 340 m/s. What frequency do you hear?

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81#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A train is traveling away from you at 120 km/h. It blows iwn 1gnf44; lnq;:jbg:0zvdymi*6n:s 6y xuxm ts whistle, and you hear d:;fmgy4 xmuiwv sz6n:1x46bg0 qln y:jn n* ;a tone of 400 Hz. Take the speed of sound to be 340 m/s. What is the actual frequency of the whistle?

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82#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The frequency of a tr3m qnkhc.h; -rain horn is 500 Hz. Assume the speed of sound in air is 340 m/s. What qmn-.h3r;hck is the frequency heard by an observer if the observer is moving away from the train with a speed of 30.0 m/s?

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83#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The frequency of a train horn me b5h-kvb7)9gw5k6zg k /npvis 500 Hz. Assume the speed of sound in air is 340 m/s. What is the frequency heard by an observer if the observer is approaching the train withk5 -6hegbvk)wvp k59mn/zb7g a speed of 30.0 m/s?

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84#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Sonar is used to determine the speed of an object. A 40-kHz signal is sent out,jxu)p5nfozz 3c k0. h7 k5yrt4k7 bbu, and a 42-kHz signal is returned. Assume the speed of sound03 5zu yk7xj h bbc75o)4ktkfu,.przn is 345 m/s. How fast is the object moving?

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85#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The half angle of the conical shock wave prodgz)2 hzocb c84uced by a supersonic aircraft is $60^{\circ}$. What is the Mach number of the aircraft?

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86#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A jet flies at a speed of Mach 1.4. What is the half-angle of g0zvvq. +pov /ty);zo:q:x b udnv+)kthe conical shock wave formed? yq.:oz:qudn v/otxvk0v;++g)vz p)b

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87#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The Concord airplane flies from the United States to Eurwa k:czp: 2icd 5*ovb9f3v.ei ope with a Mach number of 1.05 where the v:5 vo.*a w9ie2: zibc pdk3fcair temperature is $5.0 \; ^{\circ}C$. What is the speed of the plane?

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