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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 staxs0bg.il2llu5 0 swe 9v8+sontement?

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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 conducte9 p/( rof0uhp. hut(wmd 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 a s* wknq m.7s/hvteel 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 happens(ekuwa l1phbny;/ ei))sw5 v* to the velocity of sound? (Assume that all otww ;elu k)(vs*byp/1) ehn 5iaher 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 of a 200 Hz sounj1hv53 brlolcval yz-bu *w/;oyu7;) d through air iwo7 vb ;yucv*/5;ro1l zhju3la-yb) ls

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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 wavelen zva5n5l h/r9tgth of a 200 Hz sound in air zah95r nt/5vl 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 20,000 Hz are calcxszc r xrx c90:3ftyd43j*g2 kr+:cgled

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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 u, d u0ti1eh1 nk57z/bv. muzkless 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 source is emitting waves uniformly in al3b; q4c:u *fhzj9scuijzm* i8l directions. If you move to a point twice as far away froz4mjc3c fqiub* zuh;* 8j9is:m 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,qe.pf )uk ezqlk21n kbo s ,(wrn;7f; waves, 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 sourw1x. uwpl;f7v 7eb drjh3 p*4bce at a distance d from the source is I. What is the intensity at 73b .dfjr*vpu lb w4x7w;1ehpa 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 ic610** a zb i*mgfyqgvt3w9vnzr n:e 4s radiating equally in all directions. What happens tozgyw6nq*e40 zf1:mci va9rgt*b *v n3 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 0nd 3vmx97yy4pvico 8g /g l,lfrom a sound source that is radiating equally in all directions. What happens to theyd 93vvn0i4gycg,7 8 x pl/olm 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 becomescn0.6ahn3w2y;zedd s 9k nr4d 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. h2nz skhy1p: 6What characteristic of the sound increas12pkhysn6h: z 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 fbg-z o1:xmfh-sc49unote?

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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" ot y/g9.8ms2,hgbhjo lf 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 into ;)jofx/ a42hd:ivv uh water

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19#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Pressure and displacemengzvt)1fcq ef:4*2m ozy/i2i g t 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 stringp3jw7n oo1k ;dgts *r8 and the sound wave generated by the guitaops7 jrtk n31w8g ;od*r 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 b*e0(qx om:t:q;t+iduprz1 h5lvzra 1 oth 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 length L. What are the wavexty 50. 3vqj 4gszpxs-lengths of the three lowest tones produced by this 5 gz.y3-4qjvpss xxt0 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..8bu; )+-xgbmsxmo p9skjil 200 Hz. Which one of the us.j8bpbg;+m smkx.9xi l o-)following frequencies 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 length L is resonating at its fundamental frequhr j vjw l(9c hres+/n:azr1;+ency. Which statemenal+hjs r9zh+ v(; cr/wner:j1t 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 a6nz) df/ziiy4 nd 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 thku i:4sw *7wuge wavelengths of the three lowest tones produced by thiss*7u ig4kuw: w 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 is 20h (f 2e7mvj0pe0 Hz. Which of the followingh vp 2(fme7e0j 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 close pdf*r , q9ezd*n iq(75cklw2nzrd2a9d at one end is resonating at its fundamental frequency. Which statpid n9qdz 7n*rqc2 a,r5el9zdk*2(fw ement 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 saze/ wln0:e *tx1l:loqbo.- 5xptx -pu me source. Each speaker produces a tone with a frequency of 200 Hz o0 exu.--/wtzpl1o l*b p:lx:ot nx qe5n 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 two sound ib5:wb9ez,9uoy t:.)ce d cd6jq6l rqwaves 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 o6 y1s)y)qjtn kkb 7m0together and a particular beat frequency is heard. What happens to the bea7nyyqo61s m)t) k0bjk t frequency 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 explry i+p1y.)2iikxkcc +al2 yf /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. The freq8do9xkiiqlv,h+j :uizv3t ; ( s9e-mmuency heard by the observer i3ivi,mo;j hd( z9-kt xmv s9 qi+8:leus

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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 ll y/g0 8;(ruwlav6hdfrequency heard by the observhl0l( alw/gruv68 ;yder 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 decreasev-6 , e( swv09vmu71fhwmhv);bugjjdr * *pli by a fac)uwhbf ,gu h-7p vvjv*m 9rl(*edv ws;6j10mitor 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 o1p(xlpm8 6a baf frequency 45 kHz in air is 352 m/s. What is the air tempepbm81 xp6 aal(rature?

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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 so 3f/iwd-lcxphm 4 -4zfund 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 u uh++ x(yg0zo nq/do(h;7tb dof sound in air is 340 m/s, a bat emits a shriek whose echo reaches ib+qo;u/hu+ 7 yh0ddz x(n (togt 0.0250 s later. How 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 l:;omu; -jipozphuog2 r/ b r;l/( lz*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 s;r ia 9. ;et4t ;-rnllfhbdw(after seeing a flash of lightning, the distance to the light4-telw;bdr.(; tas; i f9 nrlhning 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 from a cliff on a day the ta2 t;1+nybocio5 m+c zemperature 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 c6x;vs mlof,tu;t8n0 2.5 s later. How deep is the well? (Ignore air resistance, and assume the vesfcxtvt , 0u6 nmlo;8;locity 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,sx-tu4b(ca4,hs nd g of a sound 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 aik/;wniz 7k do 4*miev-r 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 q f4y osugy6poy-1,h( 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-dozgdr3 y62cc d3jx*tl7b9 )gjB 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 intensity lev8iolyoz62gecxr; z p)( m; u9xels of 70 dB ) 8z;(oizy l2oe ;xuxgc69rmpand 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 in 6;dqkp e1pd-rtensity level generated 6 pdd p-e;q1krby 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.m 46whl s97lmz0 m from a source that is radiating equally in all directionm7 zhwm6 sl94ls 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 radiat)stcak2)l;r 3rtr/ 5gvya, ceing equally in all)c e 2r5v)r/;ga3 sta,rktlcy directions 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 acz jbaa7/(hx9bout 1 mW of power, which is assumed to be uniformly distributed in all directions. What is the intensity level at a 7/ hb9zjaxc (adistance 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 do4cgb- 7a q:qgfg. What would be the intensity level if two identical dogs very close to each other are barking:g baqc 7-f4qg?

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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 in;oq4*nre g rm9tensity level is 60 dB. What is the intensity level (in dB) at a point 2.0 m from the source? Assume thagrn4q;rm eo *9t 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 iud -sgc 2ps /jzd qqq g+jg,2f2z6p3b,s 95 dB. At what distance wilf b22qj,-6gc+gs23ud,jzzg/ pd pqsq l 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 compf5 uo 9s,; -dwbfysl9llex tone has a frequency of 1200 Hz. What is the frequency of the foursw9byl o9-d;fs5lf,u th 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 ofkuf n4e5lpxi 4qa c;37 an open pipe is 900 Hz. What is the length oaex c5iupl43f47 qnk; f 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 aq.a oo*n-gf8 )4qlt4voz( aadn open pipe of length L is 400 Hz. What is the frequency of the lowest tone that will resonate in anqg.anva t-ozd)*q (a 4o84lo f 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 9)3wz+ il1zwnpv)bd t u:ax c)has a length of 0.80 m. If the velocity of sound in air is 340 m/s, what is the frequency of the second harmonic?+zztun) pc):w9 l1)xwd3a vib

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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 temperatuyqr m x3jb5a(m+dv*9zfp9q) bre 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 b9 :rp7s8 az,.mgelxlat one end is 330 Hz. What is the frequency of the thirs: e gbzllr7.mx89,pa d 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 th 10sas:g usk 4l0vnx:ye shortest pipe closed on one end that will have a fundamental frequency0g0: s4 xssnau y1vl:k 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 ii:*piiufr .c 9s $20 \; ^{\circ}C$. 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 * rdr(t )zest7the 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-rdsmo:p b+ xvke1h q0g82(z kund in air is 340 m/sszkkxe+mgh1p: 8(qo v- 0db 2r. What 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 same length: one is open and the othllgotu. s2xa :2 +:zxrv+tev+er is closed on one en:xosuv +l+ taez2r v+.gtx :2ld. If the fundamental frequency 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 eerb;*;) h9l0jdvo3)t aej e hiach emit a frequency of 800 Hz in air where 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 wouejlo;)dj; 0e9hbtr v )ah3 ie*ld 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 frequency of 500 Hv1qholf( )2mg 1 otf2rz. If the distance from a person to one speaker is 5.00 m and the person detects little or no sound, which of the follolf g 1 (2of2qmvhrt1)owing 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 440 l;-2.jojjvwyz 9zz: mHz 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 t63 1did ,gs iqvb,5cgeuning fork to tune the frequency of a musical instrument. If the tuner hears a beat frequency of 2 Hz 6qeg5,dscb1dg i,i3v , 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 av;vd;eiqf o 2+nd 7 m respectively. What beat frequency is heard when the horns are sounded on a day wh 2;q;v+o diefven 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 orchestqwf 0izn.tc,:7 u ;lkura are found to produce a beat frequency of 2 Hz when a frequency of 660 Hz is pf. u,iztwnl; c:uk0q7 layed. 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 statioz :z8wtqc w,u 4.v1 otj9yt1upmin-8anary 1000-Hz sound source at twice the speed of sound. The ,t :ut 11vjuywq4pncmw oa8zi . z98-tobserver 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 stationary observe6 4tfb6 tnahel rh9tlj 4 *k:rfi3m55dy .wb5hr at o39f45 kr tjthebhy l5ma5.i*t 66f4dw : nlbhrne-half the speed of sound. 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 Hzfkstx5x:+3 0fy vd -ar. If a listener moves with a speed of 30 m/s away from the source, what is the frequency heard by the oafx+s:d3 kyv 0x-t r5fbserver? (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 1abej/k)egy: j fjn18 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 obj /n18:gefjjya ke)b1server 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 aa t tklw2(9yyqbh ,2x7 train approaches with a speed of 30 m/s. The frequency of the ty9t2hl x(,7 wkbyqat2rain 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 train blihd rszu;f4dj 1or8ng539 nv22naq : lows its 400-Hz whistle. Take the speed of sound to be 340 mq9l jhnazr 8id4n: 32v ;nr1guo5dfs2 /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 bloq w/; zah1ez4tietc3b:a+ s1n d,nls.ws its 400-Hz whistle. Take the speed oq3/e4+aw zni11s: shnt c,l;tea b.zdf 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 you at 120 km/h. The train blows its3 yw(ic,/a.luwxu y t 1m;/,pahk ab(q 400-Hz whistle i3. ,tbhxuc a1qwy/k/pal m(awu,(;y. 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 +(yjsnyuv-rcox.rbd7 :6 v0akm/h. It blows its 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 the wxdv 0 vyj +-(rsb 6:c7uoya.rnhistle?

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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 xnz8 t (qriu* v;)nra/of sound in air is 340 m/s. What is the frevzut*()nnr 8/x;ariqquency 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 sp lkwqa1hpy4dr+x *d9nwi3i:.eed of sound in air is 340 m/s. What is the frequency heard by an observer if the observer is approax. +h34ydp1 9aw*q :dli riwnkching 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 the6 xni4q;yfuu)h 87 d+)wujv wa speed of an object. A 40-kHz signal is sent out, and a 42-kHz signal is returned. Assume the siu6xnq;y )dah7 )8j vuw4 ufw+peed 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 x91xnn:n n3glm 18oswmzcq0) 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 conicmh t 0y:.x9xfyal shock wavemx ht.0y xy9:f 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 ttjj 5bmr8bm ks:08 yl9he United States to Europe with a Mach number of 1.05 where the air temperature ikt9yb5 88lrjmmbj 0s:s $5.0 \; ^{\circ}C$. What is the speed of the plane?

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