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习题练习：Physics Unit12: Sound
本习题练习试卷来源于51fly国际课程 (https://51fly.win)， 为试卷打印版，您也可以在网站平台(https://51fly.win/)直接 访问本试卷的在线电子版并查看正确答案与解析，搜藏保存任意题目到收藏集。 访问方法: 平台首页左上角"通过试卷号快速访问"输入试卷号 70，并点击直达试卷；或浏览器地址栏内直接输入本试卷链接 https://51fly.win/test70.html  教师使用本平台可以抽题组卷或一键复制他人试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力。
 作者: physics  发布日期: 2022-09-26 09:56    总分: 87分  得分: _____________

答题人: 游客未登录  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 statement k8afdny s9mq)yn-- tss*6k)a?

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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 co4bkx k 2z9w/ryxf z:/ynducted 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 soundsaw dup(5k-g( 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 increases, wh.imagj,*j6uchl 7i 2gat happens to the velocity of sound? (Assume that all other factors remain constant.)caj72,gmj*.6h guiil

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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 s5 8l9 jl4f+9kihpgm nround, the velocity of a 200 Hz sound throu98plmlhk5 9i4 fgj+rn gh 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 wavele (mqt0w5zwh(tn+ goty;rk 4l+ngth of a 200 Hz sound in air iwq;4zo+ mw(r5h+0tlg tt( knys

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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 thof5rrvuqflvthr5:r6ngz9 w3 : d .8, tan 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 20in;dub)7jha gc7cyc ax* 2/r0 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 uniformlpt394 7ec4x s*b 4m3ye5lpnj tvxs +lsy in all directions. If you move to a point twice as far away from the source, the frequency of the lj3 sp xpc934xsmt4te 4v+5s*nebly7sound 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 378 i *y/gopnlhsost ;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 source at a distance d htj*4hez* vm:from the source is I. What is the intensit*htmzj :4* vhey 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 that is radiating equall ;lqaaa g,b1io 5e;d*h,n art4y in all directions. What happens to the intensity of the sound? Ia,th;a,r;ng4ade q albi1 *5ot 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 in a (dq 7glxeiv,3ll directions. What hx vgi3e7(lqd, appens 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 sound becomes6r+mpx8 g)pas zc-te ;6pls3e 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 ef:pu:gpu v bvvd)98jery7k4r4 7gtl*- ;en qsmitting a pure tone. What characteristic of the:rjrnk v sp;gyf:vp )e479vld-gue 78qb4u*t sound 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 26 4 jxz14uf mwe.btnxnote?

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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 a6n8wc 7c j;dkw 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 iny i;sc tig4egt w11(t)to water

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19#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Pressure and displacementp .fpz* e hsv358d5wch 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 :tf0aqh bri0ewx2a d80 s l2 qna+8kp1and the sound wave generated by the guitar as a result of this vibration. What do th+e:tka02bp 1r0qsl2hiaxwd 88q f an0ese 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 endseaxld1hp6)3m25 p kzu, 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 wavelenj7 ci6klpz +3ogths of the three lowest tones produced by lkp o6ijc73+z 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 H 8 sfvxa )krg*i;nl+e5z. Which one ofe 5l;s+*k v8xfina rg) the 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 frequency. Which stat)2kc b; q-kpwxem;-2xkp kc)wq bent 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 op;iirk b4 4 ua1hnhf*rr/w7b e*ned:m.en at one end and 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 the wavelengtrz,5sy:7flype:m z3nr, brs0 hs of the three lowest t5:, pzs y s0e,r rr3m7lfzbyn:ones 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 w q)+ jidudc 9,gm2lh )w,hj5wa closed pipe of length L is 200 Hz. Which of the following freq5)d2d,w m+qhwj luj, h)cw g9iuencies 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 its funi0.d ppy g)/asdamental frequency. Which statement is codyi s./)ap p0grrect?

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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 speakecz id8,g dj55nrs driven by the same source. Each speaker produces a tone with a frequency of 200 Hz on a dadi55g zj,cd8ny 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 9 ipye hb.t45dtwo 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 paer.k n jbe6*h4rticular beat frequency is heard. What happens to the beat frequency if the frequency of one of the tones is iner4bjnk. *h6 ecreased?

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32#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The Doppler shift explain, x8u/ **)olvmthpgxo ;70 ev ryfiv.js

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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 obs0 lh+a*kxzgy 4( rsm:perver. The frequency heard by the observer *gkyp hx0 laz:s+ 4(mris

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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 by the bxb-+ krpf; -0d;hqqi observ dp frhki0;b xb--q+q;er 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 decreasew bmv0xuh(h /+j z-qqw,-zw2k by a factor of:h--uh2w(0q,q w xzmk +vw /zjb

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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 zv:mcr px:-1his 352 m/s. What is v: h1mrp cz:x-the 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 speh nij)b6 6dpf4ed of 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 whos8m 9nqzhsf0m+v+fp 2q e echo reaches it 0.0250 s later. How far away was the object that qn z0fv+m+mfs 289pqh 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 h,4oktxcf6-byc6s) blc+v9cje2 ve( near 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. if,8lxagk p0 of lightning, the distance to the lightnilp g8x,f. ai0kng 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)islhz ,7x ack-;hb(a 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 psb,**o btqb; and hear the splash 2.5 s later. How deep is the well? (Ignoreb*qpt* ,b;bso air resistance, and assume 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 x9+w3w4svi a pof 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 ai *n)-3abwj)cti;rjb kxcob* 1r 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 s etx h4uj+ubb./h90 qwith 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 70-5 yt ffktcyv5nh;3o6k)a)s0mdB 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 o7yj16xjil1fal0s q : os-i0j of two sounds with intensity levels of 70 dy7xa:lio1 o0j6j s1 j0-fislq B 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 e-jeu lx;i/ a/uo4cj) gngines in a garage is 100 dB. What is the intensity level generated by one engineogj/i jl;xu/e - acu4)?

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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 radiating+x1vb7lki j,h: /jmin equally in all direcl7,xkj/mih:b1 +j i nvtions 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 radiating equally cnqnnm8 ct*;4 t 43imzin all n 3n4c;iqtmcmzt4*n8directions 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 assumr 7a:i ;qfy qdcz5hv2 ,;j5atbed to be uniformly distributed in all directions. : 7;cdt5qvqy, b;arif2 j5zah 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 dB2qpi9:jh6b wyn2vbj8 at a distance 5.00 m from a barking dog. What would b9 b6npj22:8hjivqyb we the intensity level if two identical dogs 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 source the intensity level is 60 dB. Wh -vji n 0v:z8 3r.ox wehbs(;iqhr:7vwat is the intensity level (in dB) at a point 2.0 m from th.jw:ih wn8vr -b3:xhrq7oi0sz(vve ;e 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 is 95 dB. At6ze,gt0a6b:y y5scgq what distance will it be 75 dB?g q 506ab ctg:y6z,sey

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56#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The third harmonic osl gda0 rayiw 5a5g-06f a complex tone has a frequency of 1200 Hz. What is the frequency oglsyi55r- a0aw a0dg 6f 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 pipep)pg+4t njvj7a3o-fg 58xor g is 900 Hz. What is the leng3 -arx8tpjo)57 g o+f4njvpggth 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 any f;u j2a06cthoaej y+ cp8/:t6hapq( open pipe of length L is 400 Hz. What is the frequency of taj (0h aj:p2/ 686echcaty ;tou+ypfqhe 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 has a length of 0.80 m. ui-2cokny8 :rIf the velocity of sound in air is 340 m/s, what is the frequency of the seconyu2-o rc:in 8kd 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 -8ctv1gn/x3 zdi0d is a room where 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 on s87 msaokfs0-sv06nae end is 330 Hz. What is the frequencyksm8 asv- s006nfso7a of 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 ce8861yt.nxuvt5 o9wfm s/luf losed on one end that will have a fundamental frequency of 60 Hz on a das9v wu18tmeuxtn/ 5 .l6ffo8yy 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 iu n7yl:nd/t-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 6j e8 kj g4tzyqme30ufqy9,+othe 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,-yf ndogno +v3 k413ioz(dh e speed of sound in air is 340 m/s. Whyo(hodf4v no3znd +kg,e1i-3at 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 opz (9ek+h,w4a w+ juayhen and the other is closed on one end. If the fundamental frequency of the open pipe is 300 Hz, what is the fundam a(zwuhe j4 k9way+h,+ental 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 frequencyj/ mr)c ,4pocdxb0 uh6 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 0jbdx,mp 6uocc /)rh4in 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 drivp6-gl1-x t icnen by the same frequency of 500 Hz. If the distance from a person to one speaker is 5.00 m and the person detects lix gin-tlpc1-6ttle or no sound, which of the following 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 Hz and 444 Hzlf+ydhtx(gb 3.at24i d7.oylz-5u tk . 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 fork tobsfkgw5/(/o b tune the frequency of a musical instrument. If the tuner hears a beat frequency of 2 Hz, what ik s(5ob/g/fwb s 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 ti/0yusz nitq)y d292fhe sounds produced by two horns are 6 m and 7 m respectively. What beat frequency is heard when the horns are sounded oni02zn9d) s q2 iytfy/u 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 vhu;xy4na ay33fdag7z : p3qp,iolins in an orchestra are found to produce a beat frequency of 2 Hz when a3q3;au 3h fy:p4a7z ,nag xdpy 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 source at twice the speed o+qii hiy:+cqkly857nxh x9w :v, 5kgof sound. The observer hears a freqg+ni k+ :lxx5ky:c 7 ,iqhq9hyoiw 58vuency 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 (t z0dq9 can7;ac7tcw stationary observer at one-half the speed of sound. The observer he0t7tq7zncw9(cd ; acaars 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 libw-f*e(/.m2jqenovr ,1t :p0beqfv cstener moves with a speed of 30 m/s away from the source, what is the frequf.vo* jem eb:(qqp01ct2r-/ b fev,wn ency 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 traveling at 3fjnjbi3nm x 01e fykx3/)+ f;u5 m/s on a day when the speed obmx3 f103ynjuxnji +;e/k f)f f sound through air is 340 m/s. The car approaches and passes an observer 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 approac:kr *skie8vj-v q+z y*hes with a speed of 30 m/s. The frequency of the train horn i *:qe y-s8irjv vkk*+zs 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:wejvt1 17erltnj ( ;0 somgk3. The train blows its 400-Hz whistle. Take the speed of sound to be 340l1jo v0;kjrg new7em3tt:s1( 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 09-zff+ujruqntax;: hi(vk4 v-p dx/blows its 400-Hz whis/0vzu9j ad:-4ik- fr ( xvupnxhqf+ t;tle. 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 you at 120 km/h. The train blows its 4069qd6cia4clx a9 ab sl17q9ea0-Hz whistle. Take the speed of sound to be xl96 c7s9b1l4 cdaeqa9ia6qa 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. Itz0-1xjto dpm.es8f)hkt (jt2 ( mx7to blows its whistle, and you hear a tone of 400 Hz. Take the speed of sound to0 e) p2fto1s8.mjot-(t mzkhx( j7 xdt 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 speed of sound in air is w/my7u, sml7g 340 m/s. What is the frequency heard by an observer if the observer is mlwu gms/m,77yoving 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 7;jrfrxq xh8. air is 340 m/s. What is the frequency heard by an observer if t ;xq.8 jfrhx7rhe 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 sent l9w gp hk4(fb6out, and a 42-kHz signal is returned. Assume the speed of sound is 345 m/s. Howkwgb (f64plh9 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 aircr*z3aoso p )j+raft 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.-l, c5mznh44f njw /pe(c2si3c c c6nq5oo(sc4. What is the half-angle of the conical shock wave formocl6(5sc,efo5w4 -c c cs2 hn mij4z3p(qc /nned?

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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 siw )xi g3v:hfbu1j;5m,,mpffrom the United States to Europe with a Mach number of 1.05 where the air temub5)1img;i m,vf:jw pf ,shx 3perature is $5.0 \; ^{\circ}C$. What is the speed of the plane?

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