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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 f;sk 1mm 3yibu6alse statement?

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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 fastestng7; qn(jrha7 r p/2p ws ,nx;io9vd8j 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 in a ste:7lhrp* 1*h :i ,pde5qavfdhmel 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 increases, what h)d pw3*8f-q y n:s .3h-xf ckvbl,dqhrappens to the velocity of sound? (Assume that all other factors remain co3h kf nv 8xw)fd3 r:.-d*p bh,-qcqyslnstant.)

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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 of a 200 z :i we:xf:s ej-dv9.dHz sound through air :dj. fz s:- ie:9vdxweis

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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 400 Hz sound, the wavelength of a ;jj4v7ndj)7a jie-vs 200 Hz sound in airin 7v7;ajjv )d-s4 ejj 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 frequencies1+ 3 / veylq oytkkuv/wa(g,-hq)r -ds 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 :.7gl5 vu.hcqs h wo4s qv5cm1than 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 wavespn0,/i ic(io0g. mvx j uniformly in all directions. If you move to a point twice as far away from the source, the frequency of th0xiv.n0/i cj (go,ipm e 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, v k8w431dkr+xhdxwa 5intensity is 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 poino43 3*xu7gxgbygd(b gt source at a distance d from the source is I. What is the intensity at a distance 2d fr*43b 3 oxg7yg( ggbxudom 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 egjhh4e5:5p2ctwj 2ah m39ltk:kxa g0qually in all directions. m2ejht4:axl30kpk :tg c 95 a hw2ghj5What happens 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 equally agup+ ,0k4v xkin all directions. What happens to the intensi+, 4gxkvp0aku ty 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 becoc.5t2kn n 2fsjcw2z2q sy:5uxmes 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 speaker emitting a pure tone. What characteristic ofkiq.0 )8pf/p ubal0xf)- fi1tfnvf1o the sound increasafo0bff)l 01uv k1p -iq ntf/8 ixfp.)es?

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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 musical notexl b8m ;e9uou-?

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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 musical note3g3c 8kov-zf s?

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18#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When sound passes from02*fa rupwq3nva g/8g air 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 ag);;i pjiv7lr*tnr )th7(rdfre

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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 warjk)q+gdb/a o(q8( s ztz,;a lve generated by the guitar as a result of this vibration. What do these tworoq +,tg; 8a z(daq(/kjlbz)s 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 icsc. unbq- c-6a/iousx6di(v //1 lqvs open at both ends, there

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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 l/b,ms6xj fw tex:bw6*ength L. What are the wavelengths of the three lowest tones producb ws6xwe fjm*/6,tbx:ed by this pipe?

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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 2003uafd8q6qm*cyd v 0a0 Hz. Which one of the following frdv6f0qam*0 yd8ua qc 3equencies will not resonate in 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 lengtp0a:io;md)q4iz/7 sm-l diet h L is resonating at its fundamental frequency. Which statement is mma/ -pi dt4zq0):iid ;sle7ocorrect?

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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 closedd n x)tmzqh8lzmd9q44bd7hn ) e8 ,p:h 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 o8(n f f071l6tk+z bem +rowky5k* dimyf the three loweswf+ kyr +ek1zf7nlt dbkyoi* 8(6mm50t tones produced by 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 length L is1+ v5dkim vr8e 200 Hz. Which of the following frequencies will nor581mve vk +dit 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 at one end oops 6-v z44wgis resonating at its fundamental frequency. Which statemeg4os z 4w-o6vpnt 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 between two speakers driven by the same source. Each speir4rar4gwnc 8dgc.(+ p21qf ; ot hx(5vrg yi;aker produces a tone with a frequency of 200 Hz on a day5rtagr+n iir .fcx; rh;y(o14wv2(4 cdpqg g 8 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, the two sound waves should have+7c,rxgyi-u,uk 5r*i hc,o bd

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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 t sc3zjf1lkzct 7w 5c,o:mr9eciw:8 u.ogether and a particular beat frequency is heard. What happens to the beat frequency if the frequency of one of the tones is increaseit7wwc:cu. 1rczsez k:9j m,5oclf38 d?

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32#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The Doppler shift expl m7msq;-j892lxadzf r ains

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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. Th vvng* so.6pv 2;5l( swqdoge+e frequency heard by the observq6(sd .wo+l; pvvoes2vng5*ger 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 stationary observer. The frebp 5g;bus*7x /ul66oyrqo3 lequency heard by the ob6;l3opyqlg *7u/5ux br 6boseserver 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 wilms29 ( elofmb8ygv;2 fl decrease by a factor (ybevsm 92o l2f8m;gfof:

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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 freq ln)1, cv uoy(ff8ea;yuency 45 kHz in air is 352 m/s. What is the air temperature;vfa,eol u f(8cny y1)?

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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 myze3,q)t8 yoof sound 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 emits a shriek whose b;nq6 h3 )rzrfj2zx ;secho reaches it 0.0250 s later. ; rzr hqx3;6fj2s)bn zHow far away was the object 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 th/balu4 :+e4h ;z kho,onicog.e echo in 4.00 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 lightni3qm.*gf 59oyqnu 9+civ; jzor ng, the distance to the lightning strike is3c9q.zv +ju omqio;f*9 ryg5n 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 a day the tempe(kt /h4yadpcye:o43)3 7h kavvj wtu) rature 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 theuwt*h) wv 6vl8 splash 2.5 s later. How deep is the well? (Ignore air resistance, and assume the velocity of soun6* v)8 lhwwtuvd 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 5l3i2yady h90l00 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 atzk kobltgp9d90 , k68s $23 \; ^{\circ}C$ 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 witf g9j7rgjb:d.h 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 ob;eledy- l/8 tl zkp.t.v :1qbf 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 ofm/etpr z,4 3i0w(ln0 ttc nh-a the intensities of two sounds with intensity levels of 70 dB and /0tnlcatt mi4e ,p3w-hznr0( 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 by 15 engines in a garage is 100 dB. What is the int slsx0,r*8tm jxi0t x:ensity level generated by o j:s t0*8x0,ltimsx xrne 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 w4n3xv;u .nx6 o lq6afis radiating equally in all directions i3xa4 6v. nn6o;xlquwfs
$6.0 \times 10^{-10} \; W/m^{2}$. 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 distanc,/5611qa6yn lodqsx+f wl hxu2vak e)e of 6.0 m from a source that is radiating equally in all directy5lwhas,l 6x2o6/x+)e dqnkvuf q a11ions 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, whichzg1ofu;3 *y0o; a3alxz* bwtp is assumed to be uniformly distributed in all direcoztaga yu1*wxoz 3 *pb; lf3;0tions. 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. What w8bsi 8 5lrph(1z0n .t 2fgh9gy5afxohould be the intensity level if two identical dogs very close to epoftn5z9s.ib8 a2l0hy81x(g frhh g5ach 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 y.vf+h2 5mbrp intensity level is 60 dB. What is the intensity level (in dB) at a point 2.0 m from the source? r f bh.pmv2+5yAssume 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 level 5.0 m from a point source n(zy (yp:4vivis 95 dB. At what distance will it b:( yvny(p zv4ie 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 h2j/wav);: au;7cow cougp cab4hyc; :as a frequency of 1200 Hz. What is the frequency of the fourtha ;2h4gc ;o7ao:bwv/yacwc)up; juc : 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 lenef e y;cwx4-ec7 gz gb5o3nd*4do;q8fgth of the7e8f* e4 o4go zdc-wnec; xdb3g5q ;yf 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. What isqf ;;6h*nj) ymehf ,gle3w l-o the frequency of the lowest tone *h)q ln jhm,oe;lgff -6w3ye; 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 both ends has a length of 0. :7 c qhth6 :t17ksqrc4g3xwuu80 m. If the velocity of sound in air is hq1uw6:ug 7xqt:3 c7t 4khrcs 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 t-e9xe01gej uxemperature 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 ph8fd,: acf9cf g 4kn4kipe closed at one end is 330 Hz. What is the frequency o8fafg4 k k n9dhc:fc,4f 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 er h0agrg1y-5k .uqlj4nd that will have a fundamental freqg jual4- g1ryq05. khruency of 60 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 the temperature rhef4vrv1/+x* hea ,e 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 4j;r3uaqrr-. ge q 3a4oga9bjin a room 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 when the speed of so 0bz b4hn-b bnd9cu/lw/ha0-m und in air is 340 m/s. What is the fundamental frezdbh-w u 00n ch-49m/a/nbl bbquency?

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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 opem29s5/w /unjd/8x1khz kz cwyn and the other is closed on one end. If the fundamental frequency of the open pipe is 300 Hz, what is the fx1 /ykwj km5 snw2dcz8/u/9hz undamental 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 eaq;cz -jrt +wtd;cpx, 5ch emit a frequency of 800 Hz in air where the velocity of sound is 340 m/s. H5z;c;t+tjp,x dcq w-row 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 by5fjmbjah*j2 1 6-bqohiv k/e7 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 the following is a possible the distance from the person to the other speaker?j/mh-aj*h71qk2b56job evfi (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 440 Hz and 444 8jd2*xoey0w. glggtll *7bb3Hz. 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 550814/t r/owz oxkup b1e-Hz tuning fork to tune the frequency of a musical instrument. If the tuner hearsu4twr 8pxek1z o/bo/1 a beat frequency of 2 Hz, what is the frequency 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 produced by two hob wj+wgp/ .;khs*.z,byfy9 z nrns are 6 m and 7 m respectively. What beat frequency is heard when the horns are soundezkpw j; wz y.f+b,9s/b* yh.ngd 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 violins in an o6eed z:v8yni6bao bss,7*nz2rchestra are found to produce a beat frequency of 2 Hz when a frequencyds 2nz67 zi *sn68eobe yb:v,a 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 100k81eumr 2vp7c 0-Hz sound source at twice the speed of sound. The observer heam1r7 k8vuce2p rs 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) approjlwwq,k 64ba (aches a stationary observer at one-half the speed of sound. The obserq wa4jw,6bkl(ver hears 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 a lisxkxde:b299prvv*p -w p u-zq; 5 ik2rctener moves with a speed of 30 m/s away from the source, wha xv zp;r295 vpk--9rp*b2uiecqdkxw:t is the frequency 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 hgexkl 33r/h7eyxf2/ . It is traveling 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. What chaefg7hl3k3h2exy/ rx/ nge 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 observeyjyld( 4qwww p0lc8- 7r when a train approaches with a speed of 30 m/s. The frequency of the train horn is 68wpl07d-q(yw 4cl wy j00 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/h. The train blows its 400-Hzk j(s xh g3g0 6-q* o*zed7mnx8cx.frb whistle. Take the speed of sound to be 34s(8jkb - gxonfqmxx6rh0 e.c**d 7z3g0 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. Th s)4ixte*rne(dqgld0 x8d.0 oe train blows its 400-Hz whistle. Take the sped*0g)s.n0q i4x(8oetdx dler ed of sound to be 340 m/s. What 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 ez( th-jn+p-uyou at 120 km/h. The train blows its 400-Hz whistlj(-n-t ze u+hpe. 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 froy a j.j9jak9r2m you at 120 km/h. It blows its whistle, and you hear a tone of 4j2k 9y a.jraj900 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 spvq huh)jvd pz,8q 1.v m85l3wxeed of sound in air is 340 m/s. What is the frequency heard by an observer if the observer is moving away from the ul. mh)v1qjv88,dw3 vhx5 qpztrain 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 is 500 Hz. Assume the speed of sound in air i k8:dj z33ck5 o um1j3yows 6n fqvz/;;pljs.rs 340 m/s. What is the frequency heard by an observer if the observer is approaching tj3;;qk/y z :cvdwf8 pso3o 1kr 3sm6n ujl.zj5he 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 determine the speed of an object. A 40-kHz signal is sent out,7 -mudxjgh3kfwp;3s9 (p po: k and a 42-kHz signal is returned. Assume t -u( j3 93p 7fsh:mwpxpgok;kdhe 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 supersonic aircrafsto*e,i7) zu gt 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 cq y1vroc2r +1is the half-angle of the conical shock rcr2 vo1 yqc+1wave formed?

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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 tzuii n7k+7h uti1vqw-n)2b - wo Europe with a Mach number of 1.05 where the air temper7uwhz w-2kvni)ti- ni7 +qub 1ature is $5.0 \; ^{\circ}C$. What is the speed of the plane?

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