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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 statei 7-(u1zjv)g r( yxjhvment?

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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 conductj h0*y 9 7c)jz knmwxfv5,-h8erzncd4 ed 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 in /b3cvsqzzb ,p) 7 u*bza 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 increases, what hac l2jd ,v cms;g9go1c)ppens to the velocity of sound? (Assume ths, v1lgmd) ;jccco2g9at 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 velocit2e0vn orfl2pm mi)7 .ny of a 400 Hz sound, the velocity of a 200 Hz sound through air in7lriemv fn) 2pom.0 2s

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6#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Compared to the wavelengt i,kuug5bu jstlo:1e3h00-fyh of a 400 Hz sound, the wavelength of a 200 Hz sound in air i5k0fehuoj 0t1-b3gu,s lu :i ys

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7#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Sound vibrations with frptq ,zyf8cf 3;equencies 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 freque6, c/tvl kk7tvq)y j3-v3lvrbncy less than 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 sourzjd4e uhq0 19 m66aa/9lbs/k dguk;p oce is emitting waves uniformly in all directions. If you move to a point twice as far away d b d06/pu ;skoa jm19ulaegq9k4h/z6from 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 7ram.18+kk1mjozqylml29;p3 k kw v e1,i irbwaves, intensity 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 point source at a distance d from the sou/k/z)wiff b 4lrce is I. What is the intensity at a distance ) 4i bwf//zklf2d 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 sm6q-od:h+s w from a sound source that is radiating equally in all directions. What happensmdh:ws+-oqs 6 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 soh6 mj sfei)i0go4g+9jund source that is radiating equally in all directions. What happens to the intensity level of the sound? It drops ijh +9sioe4jmf6 gg0)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 asa8p-kurhpe((ra6c*)n q* x ev a sound becomes 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 puredf35sn(:a 0kb c2gb *lrjeqk 5 tone. What characteristic of the sound increasesec5(djn:3k arf b ksl205b*q g?

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16#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What determines "loudyaxr04a( dfu;ness" 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 "pitch" of a musical note?j v1a18dowl;1. p og yzdyuri8z-g;:v

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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 into/x5r:kv 1(2+ls zhw+ j jtcrnb 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 wavuympi )o.0zqg d1, )ru/ogk4ees 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 thtf8+q*y slh2ro o 3giltr8 s(;e sound wave generated by the guithsl +lr8or;y3 oftsi qt(28 g*ar as a result of this vibration. 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 endsrwif:4ex0x5w , 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 length L. What are the (1l ly,d u22 p:hso mmx3iwqr4wavelengths of the three lowest :my1s qh oru,(xdiw42mpl23ltones produced 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 200 Hz. r t1,7+k*tx dkc 8x/ilo+wg mxWhich one of the following frequencies w xkx8t c1rkox,+m+igwldt7/* ill 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 length L is resonating at its*7 kpcc u 2b.bjx,if+,g4emk0.ekmbs fundamental frequency. Which stateme7+ j4,eb0 m*x,.imgbfcbc kskup.2k e nt 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 open at one end and closed at the otherm7dm.-xatg 81 htq zqsc, 83gc, 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 wavelengthap 48*zqw2bljr;2zd 1r//ofmt; gfcts of the three lowest pdbqz lo t f41mzr gaf;/2w28ct;*r j/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 res cn7 ps:pnn4*wonate in a closed pipe of length L is 200 Hz. Which of the following fn*s wnn:7cp4 prequencies 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 resonating at vl15l((bk rgf-; 2 wm pakorx7its fundamental frequency. Whw(x1kvlg;bf2( ra5omk l-r p7ich statement 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 speaklhewf 09b r(0ver produces a tone with a frequency of 200 Hz on a day when the speeb9r0wlve h (f0d 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 twe ob;1 zj,p7(5 8nyqxd4kgveco 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 frequency is heard. Wai wsymul* 1/(hat happens to the beat frequency if the frequency of one of the tlu(*wm/ sa yi1ones 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 expla7k7t c-roj+x.d-aek cy 9r6cb8- vjgl ins

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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 s u+p/ a+2lhkxhtationary observer. The frequency heard by the observe hxa2lh+/k u+pr 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 from7 l knboo7or24k(om t; a stationary observer. The frequency heard by the ooko ob7to2;kmrl (7n4 bserver 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 w 0:f kndx*6bda factor of:6xwk0bnd*f: d

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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. Wha( eo d9lx)8 q/fucog0vt is the air tempev ledxuo(o0f8g9 c /)qrature?

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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 sounbtx 50cvc 8 1ad1)aauqd 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, .ryh;bo) s,,nnhu i 1ia bat emits a shriek whose echo reaches it 0.0250 s later. How far aw,,osnir) ;hn yu.1 ihbay 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 trhb.*wzgvq+zxw p8(u ;1nmm 7he 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 li8xvkau3ckr5v; qkg v-1h0j,wghtning, the distance to the lig;h3u x, j85w1kq k0vgvakrvc -htning strike 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 fromu zw12u/ea6;uy*w8b u)eopc p 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 ik4uu ,de 0mw-fe*r )ss4-wxca s the well? (Ignore air resistance, and asf4*s)sa ,u0 4w-ukew -rcx emdsume 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 Hd1a cpm1p/he9 z 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 airz;w o,stoobcinkc 5zq4.l6: a2 ,67 pm+ucu vh at $23 \; ^{\circ}C$ 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 wit7tj)t-bww8ssyr g 1u *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 of a 70-dB .bm(6(d0o nvi0aa 8z+jhbgkl 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 with intensit* c weq+1 +g.r pi7r,ierfmyd.y levels of 70 dB and 40 dB?gr1 + ,c mrf qd.ewiy.re*+pi7

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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 int2z+7na tcam-; jw) nzvensity level tm)zn w7nc zaja+ v-2;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 radiatibsphjt f.)( g:ng equally in all directions ijhst): p.bg (fs
$6.0 \times 10^{-10} \; W/m^{2}$. 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 radiating equally ineg8 z bgkl-ua-t-wt86 all direg- 8ak86gzbt lw--te uctions 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 uniformly4 ipx(lxo6dq .k6 u;sp, mwlb4 distributed iquod64 (pl,.lwxp4s mi;bk 6xn all 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.qm.8a pmch74+pn ecy7axiq;q 6 *crw1 00 m from a barking dog. What would be the intensity level if two identical dogs very closeq7yxam *hcwenqpq.c6m4c 7 r+i a8p;1 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 level is 60 dB. Wha +arta:b xgkiiu5 ;ct9kjz9.6 t is the intensity level (in dB) at a point 2.0 m from the source? Assume that the source radiates equally in all directions6zka95tkijtgr; a9 +.i: cuxb.

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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 is 95 dB. ndm1;gu +c9ddv 28 wdbAt what distance wd cv b+;9mdg wudnd812ill 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 ton;qznyr(mxc1 vi/ .0bz+ii u6ze has a frequency of 1200 Hz. What is the frequency of the fourth harmoni(0/z1 rzb.iiz+m yxuqnc6;v i c?

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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 8 yb..mgxg( hyv h0v50erm1wi is 900 Hz. What is the length of the pwx5eirmy1yv.vgg( h80h.m 0 b ipe?

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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 dtu.j kk+ct/ 2jvqe,t, 4rmv: open pipe of length L is 400 Hz. What is the frequency of thmevk kv,c+ .4tuj jdt:q ,/tr2e lowest 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 both ends hasf:vi ,blaegr dqb3skyway a2-2wl 23sp*;/ 1t a length of 0.80 m. If the velocity of sound in air is 340 m/s, what is the freya w1g2ba ;s,-bqp3fl* a/32 v2:siydt wl krequency 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 temperature kmp t5gm,c 4x1 boux:(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 il(:e57 w qw,r x bmimvqch0s-(s 330 Hz. What is the frequency of the third harmonr s0hm- qwlbq,wm((:5ec i7vxic?

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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 entvay) o m8ui pq/u3i fbx+21b8d that will have a fundamental frequency of 60 Hz on a day when the velocity p+ bi28uiqy/)a81tfvo u3mbx 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 temper 2g )c )chfw07l:9tw8uvqhipuature 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 the temperature 1e+aex3;x3hf kif( x*ds4ek k8 dru-dis $20 \; ^{\circ}C$. 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 ipuh vl;nu m2v )rpjxs1m(: 12js played when the speed of sound in air is 340 m/s. What2)u mpnvl1 s1ujhp(x;vr jm 2: is the 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 sameqhjw 7py)c-y8 length: one is open and the other is closed on one end. If the fundamental frequencyphc 87) wqy-yj 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 air where the velocity ozf 3097lip o vv,ejzp(f sound is 340 m/s.evz 0f vpoz l(p7,9i3j 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 driveyv 4v k+kayu 7 mc-:2.gbh)tro/.dnzsn 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 the following is a possible the distance from v/g2:kkr ybom+nh dzv- 4aysu .t7.c)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 440 Hz and 444 Hz. * sngfj*bh2+ z 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 fy* fp dbw2rwn0u9r:0 ( /.csnhsdtye-ork to tune the frequency of a musical instrument. Ir(s-rs 9eptwyd:u. nfh2 0by*c 0/dnwf the tuner hears 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 horns are 6 m ar7v a 0duqs7,w r3hs 5c)zwmmc*.tm/ cnd 7 m respectively. What vqczs)m3 5*c,m rwh w. m7r c/u7t0asdbeat frequency is heard when 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 violins in anjgi0ssd ty17wz9/8ko orchestra are found to produce a beat frequency of 2 Hz w z8 7wosg9idks/ 1jt0yhen 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 100x+uxc:y2a,s k 0-Hz sound source at twice the speed of sound. The observer hears a f,a s :y2xkxc+urequency 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) approachxbewv (rb ,86yes a stationary observer at one-half the speed of b b(y6w,v8 xresound. The observer 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 listener (.cu2; xlny0 bxf(5uc;hg a mtmoves with a speed of 30 m/s away from the source, what is the frequency heard by the observer? (The c5n ;my(0laux2 ; ch(tfgxb.u 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 sirebt el y7a.rm*sfi9o2-n. 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* bymo9.f 72 -itaelsr 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 approach /e)x m rwnvs6:d)7pafes with a speed of 30 m/s. The frequency o:)m7dwx)6 an/vprs eff 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/h. The trainmd4xjjno). 0 r*9cj yu blows its 400-Hz whistle. Tac4uxm* d) yoj0.j9njrke 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 trainvwfco n7x:() *r- )x:iqdr/d ilh4ict blows its 400-Hz whistle. Take the speed of sound to be 340 m/s. What frequency do you hl)*dxwfx)on4h qidi 7: ic r-r:v/tc( ear?

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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 v-5 *kj6swg:fz tbpp3 its 400-Hz whistle. Take the speed of sound to be 340 m/s. What frequency do you hea5zb - f36s twkv*:jpgpr?

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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 66redr2 y:c,fu)b ltidyah(2 at 120 km/h. It blows its whistle, and you hear a tone of 400 Hz. Take the speed of sou(a6b fhr:,c url2ddyi)6e2y t nd 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 aj5ob-,4 aau gspeed of 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 aab-o jau5g a,4 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 train2m7kq8sohuwf7xbja,, iub gooo9 * s (3r t4)b horn is 500 Hz. Assume the speed of sound in air is 340 m/s.m8jsbxhosw 3 oku)b*fq27r47, uoib(,tag o9 What is the frequency heard by an observer if the observer 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 od l2qv a tv7/v:;xk*ljbject. A 40-kHz signal is sent out, and a 42-kHz signal is re2v7q*tv; :alv / ldjxkturned. 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 shocbs2jxm 0ez w.q0tg7t3k 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-angle of the conical sh 2/:v eqa;3 zxjzgk3zz:klcp3 ock kzpx 333g2zcaq: zvkj/;lez:wave 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 Unitemf;i2 :f4 b7tqoq,inu/)g htndy m7t9d States to Europe with a Mach number of 1.05 where the air;nfg9 hqunio)m/itmby :42 qt,t df77 temperature is $5.0 \; ^{\circ}C$. What is the speed of the plane?

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