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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 ish1;ujwuj9,x btu 5fn/i 5 i2ta a false 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 fg :0co:/g9f epryv3iyastest 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 ss,u4 3vac 7sy ;ptvt8+v).cfsh xpc3 jound in 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 increuv:rl:4ifv sy*gxxf* iy*o 2m2mf )2dases, what happens to the velocity of sound? (Assume that all other factors reo viv2)r*f 2ul4smf* 2x:my*: gdyfixmain 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 H3kr1q t( qx6dh:1xaygu t5 bm0z sound, the velocity of a 200 Hz sound throuk y35 1(ur:txhx1btq a60 dgqmgh air 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 400 Hz sound, the wavelength of ax ;p to2e+oa7a 200 Hz sound in ai2oa+t;7 epoa xr 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 thanmwx)keqrk*q lj; ) z:t.2 /o:q: uuoua 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 than 20 Hz are ca tfvn v00;xq;/gnbhon nbyuwb07; ;b3qa p 6d8lled

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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 s2c cvb5.2b ulb/b8lbhource is emitting waves uniformly in all directions. If you move to a point twice as farb2cbh.b l/ 5l2u b8cbv 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 64nj 74ihrioc hdq;,c)i7ovqto

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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 di ;8fv+vwai l6xkdhws) ou.--ar pw))mstance d from the source is I. What is the intensity at a distance 2d wrhwv6a );vwku p)l- axi+)fdo-m.s8from 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 st:c(ah8- 7 qiz cvuoj1ound source that is radiating equally in all directions. What happens to the i ztqjc 1:(-hco7ua 8vintensity 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 distan/*6 lhrn1bgk)fee-czce from a sound source that is radiating equally in all directions. What happens to the intensity levr 6)e n1hlz fe*kc-bg/el 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 becomes louder?- zt7 e yk;iuf*a 1v*jo(cp0zd

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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. f+tx:fv3u cix;kov dxu / )ut,:*p cl:What characteristic of the s/xuu;xf:t::)c, v3 dxc*k +ulvtof ipound 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 musical notlbak(n3jhk/3 )/7k vy;li v3m4u kqcee?

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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 -i mk : bom7xi6-w *covsnbl.y*j6s,xnote?

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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 re0rbi8-wu m1mh- .ug 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 ac x ;xmmp4qt5:+-9a5wlz lmdere

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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 guitart 1,cxk9wqd en(lr* o8 string and the sound wave generated by the guitar as a result of this vibe wxdo*r,98(t lnck1q ration. 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 i 0bgcavl6 ;ky+s 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 lengan. )q/fv)pjwth L. What are the wavelengths of the three lowest tones produced by thisfv /)). pqwnja 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 resv sxm ;ljps, fcxz;-*5onate in an open pipe of length L is 200 Hz. Which one of the following frequencies will no s;*,-lzvcmsj 5xpxf;t 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 length L is resonating at its fundamental fre t2x 8ddsb:61idiqe0jxap9n2v )4huequency. Which statement is coddve hq9uxt ds61ni 08e24) axi jb2:prrect?

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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 closed at the ma,*0pp:wl( -,l*jdix,8mubm o yddw 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 wavele h:9dfvqtoqc+ln26y2 6 f2llrngths of the three lowest tones pryvf n h:qrtl l29+6cdlqf226o oduced 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 lengc)e9jp.mwzcn *f5lnk48v rw:: 4tg/ xqh cg,jth L is 200 Hz. Which of the foll9tgnh w,g/ *cm:ejrq )vc4 jpln5w4 kzcx.8 :fowing frequencies will not 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 is rvwfk ,1h3y9p(zxxu1l eh+r:l esonating at its fundamental frequency. Which statement i,yl 1lrv9h kep (xf13zw :u+hxs 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 sourcnajpl9 e98wf. e. Each speaker produeaj9 lp.fw9 8nces a tone with 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, the two2 + c1;eb gztg:gfrx1f 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 anyu*;gw-k0aa1f uii / qd a particular beat frequency is heard. What happens to the beat frequency if the frequency of one of the tones is increas;i-qwu*k1ua0/ if ayged?

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32#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The Doppler shift exp 3+t ah9uoiyw.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 stationary observer. The frequency hsb1ysaa 9 mq: 1v2m9ooeard by the obsersq:9avba 9s21myomo 1ver 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 frequency heard v; );-a/l -oka ukxo *mlajzr+by the obserj-rm k;/+o)kl;x *u a-zalvo aver 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 de 1zh;r5okjqk4 crease by a facto;jo zkk4q51r hr 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 airw/p utgo 4c.cszd8ln,ir h):. is 352 m/s. What is crg p:.whc4)ldt.8zu /, io nsthe air 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 sound in m,1h67u aknhkair 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(b01x , ephq)cb k(wvx whose echo reaches it 0.0250 s later. How far awaq1xkh)cvx pb w, b(e(0y 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 hex1*3euy cs flu(p)+wls4m1qa ar the 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 lightning, /z7k,(ekra 6 x/sytt5fe qqs1 the distance to the lightning strike is ,t fe( za/1y7 estsq6q/x krk5about

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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 the4:w x,gm /vjm il;.cvd 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 fd ; m)hayiv8wwx6e+ ns;.i8z deep is the well? (Ignore air resistance, and assumef ;dswh.;mvzxiea y+ 88n i6)w 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 uuurr ,ss80 x;wave of frequency 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 auufu e y8;0jli1ryh .4t $23 \; ^{\circ}C$ 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 o * +)2w/njqtetvqo5nc f a sound 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 of a 70-y6 ffte r+h 1ds39zmi0dB 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 5cn5nrq)u bvn3k v (tn*wl6 2bintensities of two sounds with intensity levels of 70 dB rn) 5cqnuv6b2(v3 wnlbk t5n* 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 by 15 engines of ,*gfef/i4sarxrs;zd) :8 nin a garage is 100 dB. What is the intensity level generated bynaeif *;r4z) f 8fxgs, sord/: 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 distancw g8q(4iqtdpi* q a 4-8g 9ovp1+saoefe of 6.0 m from a source that is radiating equally in all directi9g+4di8vq4we q ipf(as a-tpqgo 1*o 8ons 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 of 6.0 m from a source that is radiatinee v+3hvt,wnk nt,ac0v6ax9 7g equally in all directions isc,,nvk+ve h tat6xen0 w3av 97
$6.0 \times 10^{-10} \; W/m^{2}$. 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 of9 wag/ie.u( b j5d3xee6s/nttbc.v+ o power, which is assumed to be uniformly distributed in all directions. What is the int t+e bge/ 3ivj(to 5 c/6nsb.ue.xa9wdensity 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 5.00tf ,x-9hc 8ix6b 5o ez0oftzqu3;i*dv m from a barking dog. What would be the intensity level if two identical dogs very close toex 06utd3i zfotv*9cb 5zf;qo- i,h8x 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 level is 60 dB. 80v lnod6tnb0i )og1w What is the intensity level (inlibnd8v o )1w 0tog6n0 dB) at a point 2.0 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 5sw3js )ays;ilevel 5.0 m from a point source is 95 dB. At what distance wi ss;3wyji5a) sll it be 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 tnw5; ,f25si qs-o kfcuone has a frequency of 1200 Hz. What is the frequency of the fourth harmonsoc;,2uw f - s55fkqniic?

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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 p8 p b0xtcu.m2nipe is 900 Hz. What is the length of the 8c m x2p.0tnbupipe?

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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 resonata axc n2ft qjwd64b;*m4bl vpl9rp20,e in an open pipe of length L is 400 Hz. What is the frequency of the lowest tone that will rescj mvw4r 4x2p92bq t l ;,da*bpfl6an0onate 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 g h,*ld(dt kf2gvtt.u8 l.os+ m. If the velocity of sound in air is .l8.gtgkf *2(h ttd usd,lov+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 wvi0cb c--6pn x, wg5aep) xn+*b nwqs+here the temperature 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 at one end is qun1ofc51r h,r x5r3 u330 Hz. What is the frequency of the third harmonic?q51c,f 13rr5 nxuorhu

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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 tm 5 m4r35g.dk+ct-f ulwyi-aqhe shortest pipe closed on one end that will have a fundamental frequency of 60 Hz on a day when the velocity of s-u mqt55yg3+ -cm iaw .ldkf4round 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 aaw mnuom( 3qbmon7(:5 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 th l5-h rh7zif0he 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*c .zdev*1k sc is played when the speed of sound in air is 340 m/s. What is the*se *dc k.v1zc 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 tsb61xurj s6w3y 6tey 9e hrw;4he other is closed on one end. If the fundamental frequency of the open pipe is 300 Hz, what is the fundamental frequency of the ;h6xsyjuer w 6ty46wb3s1 er9closed 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 air wh(kw )*tjj;apg;b wo 8oere the velocity of sound is 340 m/s. How much farther back would source 1 have to be moved so an observer in front of the sources would hear n gj(otop* jww;8;b ak)o 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 frequency of 500 Hz/nm j 0r4bs7z6n+rnc e. 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? (The b7r4ms 0jzn6cer /+nnsound 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 Hz. What is the beaxv )*ggaf 1i9gt 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 the frequency of a musical9.s9 drjxiot ( instrument. If the tuner hears ( d.o9j9txsr ia 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 prodh oy2* 23kjjnc;sjx9fuced by two horns are 6 m and 7 m respectively. What beat frequency is heard when the ;j 32x knjy 9f2cjo*shhorns 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 violins in an ogvl06u x-nf ge ,mo 0q).dq8zkrchestra are found to produce a beat frequency of 2 Hz when a frequency of 660 Hz is played. What percentage changeeqfqng0vd, ) mgx oz86.-l0ku 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-Hwemv 0,ly85zn e5pxm 8z sound source at twice the speed of sound. The observer 850,ne5mz em pvx8ylw 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) approaches a stationar, yf28vsb1auk y observer at one-half the speed of sound. The observeryfuk bv,a821s 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. pf (f6ehk+6bryyh* q 1uz2pe 4If a listener moves with a speed of 30 m/s away from the source, what is the frequency heard by the observer? (6 6fhqzuph4yye+2*prk1bf (eThe 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 travel6;s 0 k5-*nicbzw +4ntpqblnr ing at 35 m/s on a day when the speed of sound through air is 340 m/s. The car approaches and passes an w*cz +-b4inb;k6 np l05q tnsrobserver 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 q7ilm,2yka/sop9 izk3 2 hqu2stationary observer when a train approaches with a speed of 30,u2sp3q9/ zmokk i ya2lhq7i 2 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) u *xd58q jutx gv15k+ycvl/e6r)ua m at 120 km/h. The train blows its 400-Hz whistle. Take the spertmu8jc/e*x6 qvl ) k1ua+u v5g5xd)yed 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 u mbwy sp1/p95a0jm; oa stationary train. The train blows its 400-Hz whistlebw5 y1m;spo /pm u0ja9. Take the speed 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 )bt bea5sm8v p0e9. c mps5-fkyou at 120 km/h. The train blows its 400-Hz whistle. Takeeesc8b pp5mm9k-0tfs )5a.v b 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 i c ;-ibmhw+l2;ea)s/ln lwjm/ts whistle, and you hear a tone of 400 Hz. Take the speed of sound to be 340 m/s. What is the actual frequency of tll2/e;h+)m/m ; snliaw jcbw-he 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 of sou0q -z;0c;( 4ziqgqz( xlo tmmqnd in air is 340 m/s. What is the frequento0mmz;qzi(;(-l qz q4gx cq0cy 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 is 500 Hz. Assume the speed of sound in q38.dn kamv; :thtd 4yair is 340 m/s. What is the frequency heard by an observer if the observe 3t.4d: dk 8;mtavynhqr 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 determine the speed of an objey7ws7ofv ,7;q1 ke+vqmoif/g ct. A 40-kHz signal is sent out, and a 42-kHz signal is returned. Assume the7o v;q k,f+i7efog/7 1mqyvsw 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 cot4nz85w8aqb i mzc1d 3nical shock wave produced 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-anglz3qzs3 y uk7:oe of the conical shock wave formed?37zqs o:zyu k3

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87#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The Concord airplane flr0 +prxfdkflf 4;t,6xies from the United States to Europe with a Mach number of 1.05 where the air temperakf+, tr 6xxdl4 ;rp0ffture is $5.0 \; ^{\circ}C$. What is the speed of the plane?

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