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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 eyq* y-4,0 mqv teby-cjwk, g9false 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 fastest thro9 *cl68g iuxag.5y 1itq-dnyeugh

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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 av:y93 rlp fg ak90u w2x6amd(k 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 happens to the velocity of shezfwupxt3 2 m* sq s+)xf/+w:ound? (Assumep+:3 uxzs w2/ ftqsexmwf *)h+ 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 l/64o 3zpwdgmx0f*w v6r w2uaa 400 Hz sound, the velocity of a 200 Hz sound througavm /z4x*gw6u wfp o6 rd30wl2h 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 xl +xim9 *cs c6,q,kojwavelength of a 200 Hz sound in air *kc 6xq sijmo+,9cl ,xis

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7#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Sound vibrations with fr*c .-sk5ah7mvuj3tk dyx+or. 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 frequency less than 20 ra6paeq xp/o 80:8kft 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 atgza,u9 gtqe1 o/f3q.ll directions. If yogofuq9. 3/zeaqg tt1 ,u move to a point twice as far 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 proporti8wp+q hwq )vyzma6+h1 lg 5c7donal 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.0pesii3bt6 0 w What is the intensi0ebi0 6psti3w ty 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 c.ri b:q6(5pyf-n oc (-vpn9fq :qbik that is radiating equally in all directions. What happens to the intensity of the sound? It ric ( .9qq(rf-onb5ykp np:6c i-q:fvbeduces 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 .euiq.v +dxss*8/ 2+btjeo jpin all directions. Whatjqsidxo.b/t2eepusv+ +* 8j. happens to the 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 4apzk mncg *;if0ms,0sound 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 emitti6:d ws1 b+yv9iko8c)s : dbygwng a pure tone. What characteristic of the sound:d sy: dwgw6yib9sk+)1b oc8v 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 mushi5r8nlj+ )zp5 kv ixcx4:y.jical 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" i pdme ml8 1zk/1e 6ye dfga7i+43.aupof 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 a;z qw/efkft yzb,g.p8(-ww2 oir 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 displacemei daog x840g2orj1rh: nt 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 string and the sound wave generate ax5xu1 ((b wmq8zdw9od by the guitar as a result of this vibration. What do t5o1z uw8x(xdm(q wb9ahese 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,a3lx:seze+ ,ti* 8wbo 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 wavelengty,cw* bxl*r jj:/k8yvhs of the three lowest tonec:* b8y vrxjy kj/w,*ls 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*i5klyycj.t dj v6(+.byup)c g;u- 9ybdx 4vg of length L is 200 Hz. Which one of the following frequencies will not resonate in the 69*xcvjyub) dp u4jci+y l-ky.gbg;vy(5d t.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 resonatingvfk5+b;funpa. dp ,u o+8n4 0h3kvjlr at its fundamental frequency. Which stat+rh o5 jk nppubf8nafk4+,;dlv3 u 0.vement 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 other, tyhzw )e41uia0t)-nvzxi:p,i here

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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 wavegc5n)t 414ql x5tla felengths of the three lowest tones prod l5f4t4tcxa g)e5n1lq uced 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 is 200 Hz. Whir,bbbj4n kkcv tj em25q: :.e.ch of thej2,b4t..qekb jr5nvm: c: bke following 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 closed3jwqil o1i9 v tpx5q6( at one end is resonating at its fundamental frequency. Whiq61i3ltjw vxq(9o 5p ich 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 sam .ru70;mvsvar w 6:xayl-g8sie source. Each speaker produces a tone with a frequency of 200 Hz on a day when the speed of sound is 330 m/s. The person isgr0;il6. : svws8-am vrx7uay
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 beat+co3lriba+q/ s, the 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 togetht zuhla- )*; .kjl+ 5fm8jikrzer and a particular beat frequency is heard. What happens to the beat frequency if the frequency of one of the tmja* k- fzr5k ;l. h8u)ji+lztones 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 explainsu lq 5:d(p3i5e7addxj

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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 frequyh*;9mf *uv +ujwv u6uency heard by the observer i*vu*u hyuw ;+mv9u6fjs

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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 stationaryxgzv4 ow rtkc*099ot/ observer. The frequency heard by the observer x09/ ttz*wovokc9g4ris

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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-a5)v3t- dw0ri ewk2xrsngle will decrease by a farvkr)wsw3 t d i0x-25ector 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 im+tt ) cyosd 0l pyh*.u6*.ehccy*c4in air is 352 m/s. What is the air temperatu.uyly*4c i6h*ecs0 m+poy)*tc c td .hre?

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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 soul -epob3n .mc+nd 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 c8jeyryiq,,)q0 qp aka2 (;, gckvq.r shriek whose echo reaches it 0.0250 s later. How far away was the objek(yci,cyq v 0,qa.raq)g8ek2 ;p,qrjct 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.jmy o,qfq*e q39aa9g0 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, the distance to8x: b3iv 1goxoufj)x y:)cta6ylvc(7 the lightning strikf i))u6: cboy71a:xgvxo 8yjlcv t( x3e 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 temperature iwbe.-yxbc bjnr1t,;vol )0gc ;e6pf2s $15 \; ^{\circ}C$. 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. uoni7sdmumn1 1ef( +vh/ -4xhHow deep is the well? (Ignore air resistance, and ass unesh 1/xv-1iohf4mn7dm+ u (ume 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 Hzsu ;3oa g0seq-9 jy,qb 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 aiqdce h.snmte+i5-/ ) gr 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 gi3j5eo ckdq2 uj e -(**s5nv)+skhcta 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 9rv u.n) ej:cf70-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 of the intensities of two sounds u d,hx3qf ii3pc:5,fbwith intensity levels of 70 dB an q5i u,fpic3:3 xb,hdfd 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 intensity sqe ck;tinh,5a qqt,i mnu7n bt+8v+6ij/*(z level generated by onb nz5,inq aqu; ne8 tkhm*v/s(7iq++jc6 t,tie 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 is4d4x1xp,v lwp radiating equally in all 4 dpw1,4xl vpxdirections 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:obxun5bw3o mj 7;cd+;ltt f4 io0;ld radiating equally in all dioc7 o+; tbo ;fbjld5mi:t nl3d;uw4x 0rections 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 uniformly isn hlr8c9i2*distributed in all directions. What is the intensity level at a distancei*2r ishcl 8n9 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 oz szug:i* w-pv)qji / /7cvn:is 65 dB at a distance 5.00 m from a barking dog. What would be the intensity level if two identical doizq:-n7z*)vpsi j://w gov c ugs 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 sourcn8pw ntd ;0gv/e the intensity level is 60 dB. What is the intgp/wtvn;0n 8 density level (in 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 level 5.0 m from a point source isd*c9c j (mk5 c4b3sjw (vvnr:9(ctkf v 95 dB. At what distance will it 9v4* c d(f5tr (cmksj:v3 9j cvnkwcb(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 tone has a frequency of 1200 Hz. What is mw0; jzrx2oqdwo7f/x 6l g(l 3the frequency oogzqf2xrw3067m(/jl loxwd ;f 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 leng okir ktukcfo 5:p*/;+tk/ ;irt5fp o* +:ocukkh 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 1tetyb7 29j b6kp.dnWhat is the frequency of the lowest tone that will res bjyt1d9pne6br2k t7.onate 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 x+ho w49r7se: j ,zcutbqh79ia length of 0.80 m. If the velocity of sound in air is 340 m/s, what is the frequency of thei+:eh 7 xqb9czjruh o4wst,7 9 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 ty )0)xs sp (ql-o ujpq5lrne)2emperature 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 qdm yby6ijcm ;2)g4pnulb6,5in a pipe closed at one end is 330 Hz. What is the frequency of the thii66yc) udj,q4 ;pnmyg2 5mlbbrd 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 i2*:uco2dea k3w) v9l7lwx c jshortest pipe closed on one end that will have a fundamental frequency of 60 Hz on a day when the veloci2w w:7 3a*uodjc)lle vc2x9 ikty 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 iu(v h hkl4w9x7mvez.6n 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 the temperature : fdl+6tq vg n)reup8v9h:8ds 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 sound in am:vodbd :0t4 hir is 340 m/s. What is 0 vo:d dt:bm4hthe 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: onk;1 xd:.269lyin 2frwneuz/jh0rfw wt5a u+ be is open and the other is closed on one end. If the fundamental frequency of the open pipe is 300 Hz, what is the fundamental frequency of the;fzur1+2ufk dl 6b2e:xh twan in09. w wjy/r5 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 8f)ycn1g) 3eaq 00 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 wonc3)e)af qyg 1uld 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 pfpkg2s bi 41al:.osi( gni* .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 thepspg.*af il:2 kg4is1.(bi no 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 Hz and 444 Hz. What i3wbs)c*blq ;(s0gq lws 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 55u.e pr7j(k j81gx0abf0-Hz tuning fork to tune the frequency of a musical instrument. If the tuner hears a beat frequency of 2 Hz, what is the frequency of the inu7ejb 0k1rg j(af8xp .strument?

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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 and 7 m respece n3x*c)qa s,ttively. What beat frequency is heard wnceq3x s,*t)ahen 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 atyk.uj 6 ak-55s egft1n orchestra are found to produce a beat freq5.fy5u eg-6taj tskk1uency of 2 Hz when 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 1000-Hz sound soq p1 t1g5m)2wnay8 fdst3ap i,/xwt q(6fls0jurce at twice the speed of soundwd5nwfgx sq1lp8/m 3f y61s ,tat)iq0j ( p2at. The observer 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 observer j *be8axq (,he3 to:bfat one-half the speed of soune hoxeq:(*jb t3, ba8fd. 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 moves with a +8hdov/ lq +xdspeed of 30 m/s away fdo+8h /x+l qdvrom the source, what 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. It is travelro66z7v5x k/jipl:oy 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 observer who is standing along the roadside. What chan6ovp /xr6zklj: 5i 7oyge 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 z voglv 08nr:8de8x5hx 1 f.yorhj6m0 approaches with a speed of 30 m/s. The frequency of the train horn is8y06 oljm1h8dr 5vf0:h8 vexgzo .xrn 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 traveling00s-gl dr os0ph+/khn toward you at 120 km/h. The train blows its 400-Hz whistle. Take the speed-p ro l/h0s0sn0k+h dg 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 train blows i)vhn6n ksq w1vlg86j4 ts 400-Hz whistle. Take the speed of sound to be 340 m/s. Wha1nvks g) nwvhq6l46 8jt 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 b.bg8 /cs njkv,lows its 400-Hz whistle. Take theg k.,bvsjn/ 8c 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 awa8e jukqt3r j1- 9pqw*sy from you at 120 km/h. It blows its whistle, and you hear a tone of 400 Hz. Take the speed of sound to bes-93w1 qpq ek8 jjrt*u 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 of sound in air is 34iw d hn0:ykp*tl,y6 miuil:; 90 m/s. What is the frequency heard by an observer *ly,wlih:uyp n:d i;6kim09t 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 ae cuc7 zhz(0b)ir is 340 m/s. What is the freq)0u (e7 hbczczuency 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 object. A 40-kHz signal is senp14 i5jht4 a0h6uc dimt out, and a 42-kHz signal is returned. Assume the speed of sound is 34 i4cmd phji1th40u 56a5 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 aircraft i-b6cfeq 2) orms $60^{\circ}$. 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 ,h/1 :q xmhtje+r2blg-angle of the conical shock w2tghjh /m1r e+x ,lqb:ave 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 to E*mstsh+;*hr zk (jii u . 1vppb,6jp -ugf,o:aurope with a Mach number of 1.05 where the air tempertmp*bu*usa,fks ; h zj6+-:. r(ppjhg, i i1voature is $5.0 \; ^{\circ}C$. What is the speed of the plane?

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