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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 *b :5dkf h g,37dx+ncq gzilx0a 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 faste (qs3xtu2w: of7ehzlpj0/hc 9st 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 stef ol )mbwt1e, bq6y+5vel 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 (ur; cphpd7z1n0 ws t3increases, what happens to the velocity of sound? (Assume t3n0d ;r 7zhs( cp1uwpthat 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 a 400 Hz sound, the velojokmw +/0fxy55g4s fycity of a 200 Hz sound through airom5 /sfwk jg+y450fyx 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 a 200 Hz (hlrs8.oxxt2*. xmu h2 lj)olsound in airrlxxmjh*uhl l2o)s x(o2. 8t . 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 Hzg3jd bg:6c*wj 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 thaa pmmikc:037 yn 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 wav0 urf sk 7j43eak5: abmz,rubuq g6o+-es uniformly in all directions. If you move to r+s:u,f 6mkbzo r0uguke- bja3a 754q 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 propoe/h-t p,kjib 6rtional 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 0-9q9cbeqk. 7jdxp/nll,ho dsource at a distance d from the source is I. What is the intensity at a distance 2d from t9q9de/ bh k lp l0cxnjdo,-q7.he 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 radndbo20/ y ggd2mnn1 w4iating equally in all directions. What happens to the ig2/ d24yobnw0m1ngdn ntensity 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 sound source that is rang( 1:h-nn wnl3vqzzt gqcc,d b1 t:w *p(e9r0diating equally in all directions. What happens to the intensity le-tz g c,nc(n9v wg: n3wz h nrqlet*dp1b(:01qvel 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?usznd( qssjc8n1h*q o6.0 nb9

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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 emiteteyb2 (78c hfting a pure tone. What characteristic of the sound increasbyh (8e7fc e2tes?

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16#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What determines "loudness" ofcpryd 78+-v hm 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 shy,6ctu t;z, 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 lv)))uy5apm3 e91(tv g nksdnq,8kzlwater

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19#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Pressure and displacement *px6 h52kz+fe8ck ih xlu o 4hm/lky:;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 - 5ru, vrmxan:lw3ni-2c8 nw sbb6*ehand the sound wave generated by the guitar as a result of this viwwvn3n*c- e nbs,hru52-8rblx ai6:mbration. 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 ops ++jtp79tlc j37ylv d3wn h3-vdi +kcen 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 length L. .r li6sek;3 ,ea prda2What are the wavelengths of the three lowest tdre pe.l6a23isk ,ar; ones 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.oe* q.wfrh w4 in an open pipe of length L is 200 Hz. Which one of t*wq.r f.eh4 owhe 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 an)zidc97v glc+c) wj( t its fundamental frequency. Which statement is corrvjc czl(cd+gwn i)7 )9ect?

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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 o a ap2ym(0y dd4n2gtgj*giw:)pen 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 awxv*m4fr2p i9re the wavelengths of the three lowest tones producevrp*mi w42 xf9d 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 pipmgq8 hp9 4fnv e*umc;wn s0k53 t+v5fpe of length L is 200 Hz. Which of the following frequencies will not resonatns9wh3n8fmvt5m+ eppk*5 vfg0 u 4; cqe 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 fundamental frequez 3;r.9x aug uxhz;q;rncy. 9zu3zx grq ;ra .uh;x;Which 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 sp+ 5/;y ppx:j, bqybzzpeaker produces a tone with a frequency of 200 Hz oz z jp:;+xpb5yyq,pb/n 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 beatsf oj0 9qxmnjm(rd) 5y20t) u+h(rftti, 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 together and a parti(gszac,s()lmzl0 p: j cular beat frequency is heard. What happens to the beat frequency if z0ljz(lg (p,sc s:) amthe 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 exot e; rppw*9(uplains

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33#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A sound source approacp ib0 0q*cxhj;sdw2w042j uqrhes a stationary observer. The frequency heard by the observer is2q;4dw0qph* isx02j0b rj ucw

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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 w(z6s )grnxxdp:-5 /sdzk wg8observx) n:w/zgw-dg rs56(8kpxsd zer 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 doubjzqnbrv*(xs)60 l-8g f kdph5 2ncnt1le its MACH-speed, its half-angle will decrease by a factqpfbx h(k*)cn-tgnzr21n d0s 5vj86lor 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 kHb0jns;l*+m7kxffsdv5i09 l kz in air is 352 m/s. What is the air temperatur k s;v f7bd0lsi5lxfm 09kjn*+e?

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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 speef:e ;9btt() haaox i2xd 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 sqguf48oy8z t0 q *woj:ound in air is 340 m/s, a bat emits a shriek whose echo reaches it 0.0250 q0gf*8oyw j4zu: 8qots 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 the echo in 4.00 s. The temperature 0rs0(-cj+ -hmb vmql3dv:mimz3ac 5vis $0 \; ^{\circ}C$. 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 distat f49: jqbai4jn* tx5gnce to the lightning strike4qag9*:jt5 jib x4tfn 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 fhqn -on 1w kvb7i9.4t58s uyacliff 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 anbiu j y2*gb c.7rm.cg(ty3wd*d hear the splash 2.5 s later. How deep is the well? (Ignore air resistance, and assume the vel.itw(.dc guj7rcy mgb* b*y32ocity 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 of61+oklyksip z 4vt// k 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 amyi-xn*7f 4fv t $23 \; ^{\circ}C$ 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 with intens*538 mhc 3uataf+i f04gvo zrgity $10^{-3} \; W/m^{2}$?

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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 sound?xaj.yqsv8; b)up n,tbga y5a g09p:s*

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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 i7nmmarrx3b4; x 0k6+rnyap2 qntensity levels of 70 dBn73a0k 4q m p xrrnmrb;a6+xy2 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 in a garage is 100 dB. What is the intensiti zv cog(9mx21w 6hny5y level gene mzn h1yx(6vwo29c 5igrated 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 ;c c7 en27 17wq cfwnr674zl ohy3sebvfrom a source that is radiating equally in all direelcvc nyf1zh76 ;wr2 7web74nqo7c s 3ctions 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 so icp:og(ux0tn ,b7h /iurce that is radiating equally in all directions ipu 0(gix:cn,/7oi thbs
$6.0 \times 10^{-10} \; W/m^{2}$. 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 mWe 80i(q te4d7( lhi/plu6v vra of power, which is assumed to be uniformly distributed in all directions. What is the intensity lev((6 v0i 4uliqvah 8re7delpt /el 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 dis 7osb 6tj5wp*kw.a eubpyu/05tance 5.00 m from a barking dog. What would be the intensity level if two identical dogs very close tpu*o7/5t pu 0s jb6b5e yw.kwao 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 le)y6w k72 ahtwguzv)1i,zl o h4vel is 60 dB. What is the intensity level (in dB) at a point 2h l1a w4it) vz ,ko6)2wgu7hzy.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 sou* ,oeq2q)uueti7 n.s urce is 95 dB. At what distance will it be 2)usq eunuqo,e*ti7 . 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 to zxdp1d-11vxbb ;6n0zhs f xzx2qo-u /ne has a frequency of 1200 Hz. What is the frequency of the fourth harxx d xbzudho;-2zqnbz v1x 1 /pf016-smonic?

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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 bycqkww/g; 1 osm,:+z of an open pipe is 900 Hz. What is the lenggz;sm/ w+:y1 kobqc,wth 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. tlr9s*yq oepo28a (3 b What is the frequency of t(2aps8l3or b t*9qey ohe 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 l s7lcyh4j/dmz2u gonfq:672 ends has a length of 0.80 m. If the velocity of sound in air is 340 m/s, what is the frequency of the seco/ l276oul74f n s 2czmyd:qjhgnd 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 3o p mw/ycd)yidx ja:ilw6) 55ne/mr+in 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 frequxh9 )ykj:7hkw ency in a pipe closed at one end is 330 Hz. What is the frequency ow7xjkh 9)kh: yf 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 c )f 1tt ;gnfeaq*n0j0alosed on one end that will have a fundamental frequency of 60 Hz on a day when the velo;1)n a0gtj tq0f*aefncity 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 w4 v.rxosyr5z /here 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 ww*; 7a cpx hkn,uiv59fa-zmje( (3fcu here the 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 1g1 ,6tdt gmpl)khnwsn2o77 sof length 0.75 m is played when the speed of sound in air is 340 m/s. What is the funssp71gnktdg76htn ow1 2,l)mdamental 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 other is closed6yvf;s-a o+vq2p wj:eggs ((j on one end. If the fundamental frequency of the open pipej; ogs(2w aq:-fv6e+j(sg py v 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 :c7cb .dcl1 xsfmoe:l +h9:gceach 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 xomsh1+gc97:. bdl:ccfe l: cbe 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 driven by the same frequep7 qhpm9jlmrl-ehb/c-1 5lo 7ncy 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 dh1qp -er5l9mb7 lopm/ hj-c 7listance 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 Hbc80 ) khchte0*gd8nwz. 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 to tune the freq5 5*r5issa wlunb+ah 6l09 fjsuency of a musical instru9 sw+l0ah rn* i6fl s5u55bajsment. If 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 pwf 219m bnkta)iqpkkr:; : 1cjroduced by two horns are 6 m and 7 m respectively. 19:kk:m 1tb qcawfirpkn ;j)2 What beat 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 an orche,2ei ul510cbzjgpj* c stra are found to produce a beat frequency of 2 Hz when agjip j,0*e ul b5cc1z2 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 10004grud h*//gj/nlq): vmoa i7e-Hz sound source at twice the speed of s//7 rge mvj*h :o) l4a/idungqound. 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 10y ))1plnw y:j g)q6e0eb p1iox00 Hz) approaches a stationary observer at one-)0ol6 e p i1pxngwbyj) :1)qyehalf 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 Hz. If a lrel oa 4g*j4: qmm-ougel/i+: istener moves with a speed of 30 m/s away from the source, what is the frequency heard by the observer? (The sound speed is 340 mg::ei*mgjlo a eo4 ru+4-qlm//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 35 m/s on a day/2h4:g kd n,gip+iooz 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 change of frequeniz+/h g,ig4:ko 2onpd cy 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 ol+tmp u;tk11 heard by a stationary observer when a train approaches with a speed of 30 m/s. The frequency of the train horn is 600 Hz and the speed of s1tlumt + kp1o;ound 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 blows its 400- kp7xkoi2w0q4pe5to7 t.ec 2 gz o1ua +f(y,baHz whistle. Take the speed of sound tyz 5 k, b1te2u7p4wxpaf2+. gq7c0kiooo ( teao 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 trainneim/te i4b64 rs 6 r9dexd(6q. The train blows its 400-Hz whistle. Take the speed of sound to(xe464qbtddmi e6 ns6r9ie /r 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 fr*0u: ehw,exihom you at 120 km/h. The train blows its 400-Hz whistle. Take the speed of sound to be 340 m/s. What frequency doe hhix0,w:u*e 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 its whistle,ifzxs a2 ;u)sgm/mj;;g2 u m,g and you hear a tone of 40;g gxmsmuguiza j; ,)2/2fm;s0 Hz. Take the speed of sound 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 speed of sound in air i-:t)rqnjz35 ysxet;x1d*x gds 340 m/xzg ;t3xd1n)dtxs *jrq ye 5-:s. What is the frequency 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 ai2.pvq bn;vmrv5nari-+ o ) n.jr is 340 m/s. What is the frequency heard by an observer if the observer is approaching the train with a qnr2p ;r5ovvj +)ni.bm.n- vaspeed 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 sen gd,52 ljq*ruyt out, and a 42-kHz signal is returned. Assume the speed of sod2grq5ylju* , und 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 producw6deau9w t934 nup3uned 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 5,//wdpr wdgt the conical shock wave fo,5t/w/gpw dd rrmed?

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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 th/9e4okj/w5 bj0e:wngp dg u p:0t9 vqge United States to Europe with a Mach number of 1.05 where the a bg/vwp9 pwnd jtok9g4eque :5:00gj/ ir temperature is $5.0 \; ^{\circ}C$. What is the speed of the plane?

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