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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 .1y;snkb p ,ltstatement?

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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 conducv:,;* xd,7 dpw1v f d0bbbdglhim4tz+ted fastest through

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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 i/1n1fhgxrnwz4f(;*tj e5ngw* gz 9wvn a steel rod?

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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 increasyope8 p* /lz* .yd:oxbes, what happens to the velocity of sound? (Assume.8p*yp* beoy olx/z: d 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 v z0f;xxj8ebm0t s+. eyelocity of a 200 Hz sound through air m0yz0;.exb ftx+8jse 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 wavelepukt 32yk-sk :zxbbo :4 i.f6bngth of a 400 Hz sound, the wavelength of a 200 Hz sound in aik ziuk2f-b:tx 3sobpk.b64y: r 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 freqmtybk7cyr. ,n+cp a6o51p6 usuencies greater than 20,000 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 tha.16x ,/22s gx g1gpttvw6k fwpuw 8lqon 20 Hz are called

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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 d n97c :osj5nxnirections. If you move to a point twice as far away from the source, the frequency ojn59 :snc 7xonf 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 5m7v-aqshfj(/1 xadamn9yh+ proportional to

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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 distance d from the source is I. le3 0(c8xfe u)q;x sj2qz5jgg What is tgjsq;l 5xq cxfe )(je8z302ughe intensity at a distance 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 ra jdj :mk.:m7yvdiating equally in all directions. What happens d:vm. j7kj:m yto 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 thai pqua.*t -8 69tkkm7ei6pouqu/ tzs9t is radiating equally in all directions. What happens to t6/ii*ktup7a9otu.kzu 6tes q p9-8qmhe intensity level of the sound? It drops 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 becomg3 huep,uh3 ,fes louder?

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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 speakafzd2wes.6 v4 5yyao. aa6t.per emitting a pure tone. What characteristic of tys66 awo .524daa.faetv py. zhe 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 "loudness" of a mus: ;irt:t/jr od2xtk c3ical 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 "pitch" of a musi*(jrt(t + nxykcal 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 aic :qgotbw(gl:5y7 :um r into water

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19#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Pressure and displacement waves a/ hr novfka qd6ux(495re

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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.65 mg:gphsva ud9ua6e3w3k s guitar string and the sound wave generated by the guitar as a result of this vibratiouuk:wss3 g65ge v3a dhma .p96n. What do these two waves have in common?

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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, thu/ k/u 44ehp*vf b4o6e*cdj ctere

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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. Whab)t / 7)tmusejt are the wavelengths of the three lowest tones produced by this pibus)j)te /7 tmpe?

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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 pipe of length L is 200 mw0l):kocf1 y6 (- brnhgr.pp Hz. Which one of the following frequencies will not resonate p-k(f:rg ) cply.w0robn6m1hin the same pipe?

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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 fundami bg63d7kfi-g ental frequency. Which statement is correct6 ifbdk7gi g3-?

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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 open at one end and clotf)(o 1*ymctpeho3 ) psed 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 ofrl6 ;or1 sp9yr length L. What are the wavelengths of the three lowest tones produced by this p6rr l;1po 9rysipe?

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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 length L isu3;i 9e q65zgdyx ogh*t5ft )(ew ek6a 200 Hz. Which of the following frequencies will not resonate i 6tfd(y35qgk;xw5u6to )*e9iaeh gz en 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 at one end is resonating at its fundam :gmfsfg; zf5*ental frequency. Which statement is cs f 5f*gmz:g;forrect?

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29#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A person stands between two speakers driven by the same source. Each speavej,sl(2 hf t+ker produces a tone wit(jl+ etf hs,2vh a frequency of 200 Hz 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 beats, then smybyu3;) /u q g:cu(yh r;brcfag8ovz *84/ 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 together and a particular beat frequee:2:yxxt qsuguy+*o (ncy is heard. What happens to the beat frequency if the frequency o:gy: sxueuxt (qy2* o+f 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 explcr51yqvu: dd2ains

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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 stationary observer. The frequency hearyq+pc( (w1k1 f8dvpb zq n(k0ld by the observe vc (kk 1qf(lnbz(w+ppy01qd8r 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 stationaryyp2nu,8jx/ o mbcs*n/ observer. The frequency heard by the observepn8xb n/so/u j2m*c y,r 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 decrease by tv7 :f7ad;ibop6f +jza fact+jdf ;vao pzib7 ft67:or 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 352 m/s. Wfy4f*pdxl ms )9zk; (lhat is the air te*4 )xfp(smlfk9 ly;zdmperature?

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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 sou- /kvfl k t1je/fw(80xnn xbm8nd 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 is 340 m/s, a bat emi /)8kajkmm,q nts a shriek whose echo reaches it 0.0250 s later. How far away was the objec ,akn q8km/)mjt 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 4.00 s. The temperature is6,yh8q46mjk(ovj l l5/: aw,nnivuq i $0 \; ^{\circ}C$. 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 flaivsx( /n/e e a,d; sboj,6ccz-sh of lightning, the distance to the lightning strike is bcsj,cexaoez-//iv6 ;s, nd (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+4ifc; c joynz 1vf,soy 6l,e1h8qsh, s from a cliff on a 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 hear the splash 2.5 s later. How deep 3s i0hyzy, nl6v:z+dx:nenmku ds7g v)a+a5- is the well3v- kz:sld)dyn 6uvnas,az+ ygxei+m75:h0n? (Ignore air resistance, and assume 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 frequency9(-lw2b3p.0i mdys v b;bzm4fq fzfg; 500 Hz 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 a w*e6de*y ( oxhx)h,+nqga-sat $23 \; ^{\circ}C$ 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 sound wi4gyats-+1ib:1 z: ncf9zn o 4;grohtith 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 of a 70-dB sounzkh giwpp1t5t(r4 7:1bw hl v,d?

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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 with intensity levels of 7. ()kbtkg; q8bbj s1vc0 dB and c k q;t b8vb.k)b(gjs140 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 by 15 engines in a garage ig) svz dc0pdr5vpx( 507zy7ui s 100 dB. What is the intensity level generated by ou57cxd)v5z 0zpysv ipr70 (gdne 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 sourcgy3p5sh e/ wmol 9xrqzlb85/ :e that is radiating equally in all directions isxp/bzh s:5wr3lmg/el95o8qy
$6.0 \times 10^{-10} \; W/m^{2}$. 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 of 6.0 m from a source thafuo l)n2we,uo4tka/*q yqh 7 .t is radiating equally in all direc q/ylo ,4ofn wt.7q)k2uea *uhtions 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 about 1 mW of power, which is assumed to be ufa;e ,mtty-kc hc7k-d6iq*s ;niformly distributed in all directt ;k a 7,*fs;-iqktmhd-ce cy6ions. 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 /i5w *j86nbbm.h kt+ 5naxh yigi6di2dB at a distance 5.00 m from a barking dog. What would be the intensity level if two mi.gd 5/tabyi w6i 52n+ 8i bj6nhkhx*identical dogs very 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 sourceo4hash 8ym plxw1 )j;jpeb-y u*81ek ( the intensity level is 60 dB. What is the intensity level (in dB) at a point 2.0 m from the source? Assume that the source radiates equally ;1h-aex( b1slwk pyjoy j u8pmh *)8e4in 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 level 5.0 m from a pointnr7wfmlujg ( 5( n**fn source is 95 dB. At what distance will it b* fnrf 7u(glmwn5(n*je 75 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 has a frequency of 1200 Han xi2eal8 9b3q n u 4s1jee1q02dhk5lt6pbz;z. What is the frl 6; ja2t92ns x1dpihl3 k4zqbuanb 0e8qe5e 1equency 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 900 Hz. What is the lengviqegdn l/8 8 ;8xwpw6th;endxi6lq88vw8pg w / 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 in an open pipe of length L is 400 Hz. r( ao/*a ldzyw0zpl+/What is the frequency of the lowestoyp(l /za+l/0rda w *z tone that will resonate 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 fcsmbiz4*w 8 6both ends has a length of 0.80 m. If the velocity of sound in air is 340 m/s,*w4m6c fbi 8sz 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 temperatury vc7e09. la sdm* by2k8byl7le 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 cr+ f 913h/x (r+,psza zaz,npo3 kpphflosed at one end is 330 Hz. What is the frequency ora 3,kp+x/np ,(f 9h+ozfasr 3ppz1hzf 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 one e7co s .g0.e7xelbwjr; nd that will have a fundamental frequency of 60 Hz on a day when the velocity of soung ejobel7x..0crs; w7d 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 i-avv. v-b)a g4tdfsy,s in a room where the 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 room where g tbg( gq+s6c1the 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 plp)q7bh4r: 9us zg 2y;qnk.vgjayed when the speed of sound in air is 340 m/s. What is theu v:2hj4y;7qbzg q)nr9kp.gs 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 on ony)t rm 96b(tr(i a1gmue end. If the fundamental frequency of the open pipe is 300 Hz, what iaym( r(gub 1)tt6 mri9s 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 frequencyjbjcad: 5 2vcc66rdp4/ c qya( of 800 Hz in air where the velocity of sound is 340 m/s. dcc(/r 26q:4aj bayjv6ccp d5 How much farther back would source 1 have to be moved 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 driven by the same frequen5ni .jsrifo8p5n1 d;s3yi xy:cy 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 the following is a possible the distance from the perrs8i .y fiijx :5ndnp135os;y son 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 44n6ersdf80y.ac j0we:)xad b5 :)oxo y0 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 foryqr), snim2r* c9 f8ouk to tune the frequency of a musical instrument. If the tuner hears a beat frequency of 2 Hz, what is the frequency n smr9cui2of,yqr) *8of 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 produced byr:to 0c9zhqo9 two horns are 6 m and 7 m respectively. What beat frequency is heard wherct qo9hz o90:n the horns are sounded on 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 v i gn.k ;vx;pzwsjd: p+l .p1rvkw;is0+)n( zmiolins in an orchestra are found to produce a beat frequency of 2 Hz whepl swxv dmks r.i0+gnp1i;z;.) (wp:vzn;+kjn 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 stata8;z8 6 ur+min sqe(syionary 1000-Hz sound source at twice the speed of sound. The observer hears a frequenzq8(uy sm6 sn ra+e8;icy 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) approaches a stat6o wp5xyxwf6(ionary observer at one-half the speed of sound. The observer hear wyx5(x6ow 6fps a frequency 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 iouz48:krjd7 c 2p8jda listener moves with a speed of 30 m/s away from the source, what is the frequency heard by the observer? (The sound speed is 340 m/ crpj:z 48dkd872jious.)

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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 o ,uj9gqy 0a8rsiren. It is traveling at 35 m/s on a day when the speed of sound through air is 340 mo0r8y,qj9ug a /s. The car approaches and passes an observer who is standing along the roadside. What 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 stationary observer when a train appro kk:bgj42xefa1za:x : aches withke2:xb4 zjg1xaka:f : a speed of 30 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 tr db:qx3e7o0t)d mwy4hm :j+moward you at 120 km/h. The train blows its 400-Hz whistle. Take the speed of sound :dt oyqb:3md rm0+4 w)hjxme7to 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 its 400-H0tv 7p2cs :c4gfxdc;t z whistle. Take the speed of sound to be 340 m/s. What frequency dt4:gc2spd c; xtf0v7co 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. The train blows itssk0ik xx;4v1qwj.) 4mct +ole 400-Hz whistle. Take the speed of sound to be 340 m/s. )qvcx 410 w+ jsxlit;kk4e.om 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 ktl01 as1b7pfcjb: 9udh 3ev s/b4(ctum/h. It blows its whistle, and you hear a tone of 44ts j1b1 fuv:u p b/tleb3ac(c09s7dh00 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 train horn is 500 Hz. Assume the speed ofhym3uqkbh.n5i;ou. l; qhk .: sound in air is 340 m/s. What is the frequency heard by an observer if the observer is moving away from the train with a speed of 30y.qmk hnuu:ik3;qb. .oh l;5h.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 )zl+: hzyieehl:*y -n is 500 Hz. Assume the speed of sound in air is 340 m/s. What is the frequency heard by an observer if the obser+zhh)-le:ie*ly ynz: ver is approaching the train with 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 determi-w nyu fp. bx*d6 gmu6p-8ij6une the speed of an object. A 40-kHz signal is sent out, and ajdxn8uiy-p *mwb 6u -.6gpfu6 42-kHz signal is returned. Assume the speed of sound 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 produced by a supipccpm. xc3* ,l-1xb personic 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. Wh pz0f0up)ypl pmy iwoy2v+:vm ; 6j-p6at is the half-angle of the conical shock wave formed?)pi pvo2;y6 y0pwjvpmpml: f u60y z-+

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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 Europe with a Mach number oh8 nl( qti-l,tz;wcv 0f 1.05 where the aiwt(htin cv8q 0;z l,l-r temperature is $5.0 \; ^{\circ}C$. What is the speed of the plane?

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