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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 smqzp71l .ldsn k 3ej41tatement?

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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 conductet0iau7jujasq5 v ))z 3d 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 somwwnyq1+hh z f1g ;;+zund 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, what happens to the velocilcfh-9zw zq fq o.2s g*,v57wuty of sound? (Assume that all other factors remain constantofg 7wv*q2 wh5cq9zu lf .s,z-.)

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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 sound ;oc 2y6-meq 6v 71kcxxtj 2kpjnbxm.m, ln 61athroukpa1x6let ocx xvj;6yn7n2b j2 -m,m1.c6mkqgh 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 wavelengt*5 (mv3xnb/+o5nc qz6otch-7xcz6qan ;x oab h of a 400 Hz sound, the wavelength of a 200 Hz sound in ht nxbv*5 zzx3n6c(7x6q can 5/qooaco;-+ bm air is

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7#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Sound vibrations witvp3+xys2wedl, e o7-th frequencies 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 Hz are ioc1u coxiuw1.-:vx. 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 e *wf2o)gt(g pcb:4a jdmitting waves uniformly in all directions. If you move to a point twice as far away from th:owatbjdg ) f *c4(2pge 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 propvqvb+pn99 ,t*z mv0x portional 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*,3/r tryg ct9ahs q5m distance d from the source is I. What is the intensity at a distance a,h3*5gtrtq m/sr9cy 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 radi 7gagx.k ga6e*ating equally in all directions. What happens to the intensity of the sound? It reducekx7a.e*g gag 6s 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 inik25mz(l w yn6 all directions. What happens to the inl 2z6wimky 5(ntensity 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 * qd hjqh zi*;o7xki9-increases as 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 nqnml;b7ea/0 emitting a pure tone. What characteristic of the sound increas;0b/a7ln m nqees?

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16#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What determines "loudness" x;:+rftryepv lasqkut3w5:j:k ;/ q3 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)nuq9k-, i9:4juhp r wk .hmmi 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 frocv (a8 mofumot 0 k9mh-m:r5x,m air 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 displacement w:.dup. pv1 bbcaves 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 d 2. qks)b,nni8w ytnl;of +q3and the sound wave generated by the guitar as a result of this vibrati+ n.qwifo;k n lb ny,)st382dqon. 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 whil3 yw3phqj2y/ ch is open 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. What are the waveletk,, v9oplwtjm ( +i0engths of the three lowest tones produced by this pipe? mi, tv0o(+etp9,w ljk

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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 opex(,1xvohf z*a n pipe of length L is 200 Hz. Which one of the following frequencies will not resonate in thx o*1h(zxav,fe 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. Whicj5* wkeco2uvvdbw5cv 2:s- sh7kwa/g,kjr0. h statement is cork j,r/s:wkh72w ev2 *o.c 5c0jgvk5d wu bas-vrect?

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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 thmhz (,mlhuvy 5/1 sw+lm2.lvoe 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 wavele:fz08u9r/ rexg 4+ a.qmloyld w8nq.bngths of the three lowest tonesym zrbg8fn+ d.q:l 08wu94 a oxqel/r. 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 a closed pipe of length L is 200 7uf0a( y 1- 8 /dnye*bvi ,mcbjd8gahtHz. Which of the following frequencies will not*j-(g adf bc08e hm718yt,/ab nud ivy 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//fxk,uawpea4 jx-1 )kg nv4v at one end is resonating at its fundamental frequency. Which statement is correct?1, nvew-pf vgkx/a) ka4xu4 /j

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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 speaker pr kdm *v 5v*fjap3bdx+5oduces a tone with a frequency of 200 Hz on a day when the speed of sound is 330 m/s. The person is3+5 k*mxb5vdjp*vfd a
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 b sdl;7qa140mrw b, g9ugxci/ feats, 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 toge-o;drfvsm)tzj 5c py+,l35uather and a particular beat frequency is heard. What hap;mva53t-cdzurf +ploj5,y) spens to the beat 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 explain3i74-u zu)qf1jen5qhvb-20 vfs pdn2+nntkg s

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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 frequency heard by th4 g)1nfn02b. ih 7qa leahxvu(e observer ia(2b0ae)q i fu17lngh n4vh.xs

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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 observew9r38t fh*sgz r. The frequency heard by the obsersh83gw tz*r f9ver 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-speedcwd 30)cwn6s t, its half-angle will decrease by a fac6ws)0c 3dc wnttor 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 frequq y44flpfoyj -8hbrk w k,,w1+ency 45 kHz in air is 352 m/s. What is the aiyp jrokwb-w ,q yf4fl 18h4k,+r 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 speed of szcu e +xy5cie9ee-4*tw 0*d ;ni64rwkdltf 4uound 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 wgfsqlyq;vf 9 37c; 2yt82lysohose echo reaches it 0.9;cyv3q8fgf ltq2 7oyls 2y ;s0250 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 the 6n g( lu /q )g*.alf,ah2rfdrpa 30nvuecho 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 aft;cfjrk hj14v5kv1y /5ekb qe1er seeing a flash of lightning, the distance to the light qrv5je1k cky;he1 j5/1bfvk 4ning 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 temper1h1 afw40 iaox07p4td dts ,mdature 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 deezeh ruzw hzswc.5b;/3q34 yo(p well and hear the splash 2.5 s later. How deep is the well? (Ignore air resistance, and assume the velocity of sound z/hq .eu5 zocy3(w4 srhz3;bwis 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 mjrvy470)ktbfrequency 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 at6g ngwe,yb2j+ 5ew3fv $23 \; ^{\circ}C$ 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 x k0x bvltr*w6p xbl4wwwl6k/ 5j3-o*level of a 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 fp-ptr(;cw/1 o g) sswof a 70-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 with intensity levels of 70 jdh/*t95sz hxz +3fiodB and 40f9/+xzs* dht5 jhi3zo 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 garaludv 4:ow8v;4fn1djl6h0t , 1vlozbr ge is 100 dB. What is the intensity level generated by tljo4nl4;rb8d,0f1vz d u wh vvol 6:1one 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+s vvarqyzi5 ht-;:m0 source that is radiating equally in all dhqm 0:+s-r ivy5av;tzirections 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 t (ntnf+q,c* d(;* hpc:nqn0epnhx ;y is radiating equally in all dq p;; nnf* (xyd0:c ,h n*et+ncnt(hpqirections 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 nam un)-kf5wvqc63-g 1 mW of power, which is assumed to be uniformly dis -nwmv6)ak3ngc qu -5ftributed in 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 5.00 m from a barking dog. What w5 .e mstfp3bployd0ftj+s(12 w h t qqq)b/l/;ould be the intd f5t(lptsq b0s3 fboyh1.) ;/tpq +/ml2wjqeensity 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 o4d -ykhca; w2-pd;t fsource the intensity level is 60 dB. What is the intensity level (in dB) at a- fpd;w4ht da2o-;cyk 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 nc06do3b w)w 9ky;obipoint source is 95 dB. At what distance will i; wi d03y6 wck9b)noobt 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 hy ppd9x m j5 5gh9akwu77p/y-ysy/w; a frequency of 1200 Hz. What is the frequency oa/ uk-wm5jy5g 99;h/w y7 hd7xp syyppf 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 i8rd( mar4 +o1le0v ddas 900 Hz. What is the length of thede vad8 0m ol(drr4+a1 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. u,o jw/ hs:j :dz-cnx8+woo8 mam.4bh What is the frequenc/j o om,wch+4o.8na::z- msx uhb j8wdy of the 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. If thiu asi4n eir63dvg.i3rm0w .:e velocity of sound in air is 340 m/s, what is the frequency of the second isa3 r 0.ng.iw4i:miv3r 6ued 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 y.z +ljb1mdiws9 cw29a -2vjxthe 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 one end is 330 Hz. vs/:- 7:m lz;pjclt jpWhat is the frequency of the j ;tlszvlc/-:jp 7:m pthird 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 closed onpm w0vf:/a-ve wuks m:(s4d/o one end that will have a fundamenta m(/ :k:f us0pv/vwd4owm- asel frequency 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 ishq j3s lir5 r:it5-5gt $20 \; ^{\circ}C$. 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 yfw;- rymsb/7czj 71, sfu*fwroom where 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 of lengthf7jaev c dfp0p,g l4fld r48/8y/2noy 0.75 m is played when the speed of sound in air is 340 m/s. What is the fundamental f4/cfpdy2,f70jeryl8g onpa f v4ld8 / requency?

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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: ones2;an ng*/ yuvi3oi7l 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* yi23a isgu/n7voln; 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(of rqjuq9 u0+ emit a frequency of 800 Hz in air where the velocity of sound is 340 m/s. How much farther fuo+jrq0(u 9qback 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 driven by the same frequency of 500 2+tt i6b77kl4oml.v)phlln s Hz. If the distance from a person to one speaker is 5.00 m and the person detects little or no sound, whi+2s7 6v 4tklpim )hln.llb7o tch 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 49u /30f0 juy-r0yb )p xo;elw eukfu)o40 Hz 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 tuning fork to tune the:*w0itlqra 06lal/ op frequency of a musical instrument. If the tuner hears a beat frequency of 2 Hz, what is thel/l*lqa: p orwit6a00 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 and 7 m re(og( byhpw. +j muhpin/-5)ys spectively. What beat frequency is heard when typ -h(.u+ynhb )i mwps5(/gj ohe 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 violi30bfe-ef859 wfyx4q *yml yp9 tmti:tns in an orchestra are found to produce a beat frequency of 2 Hz when a frequency of 660 Hz is played. What percentage change in the tension of o3 pqexyyt5m0f el*i :f9mbwy-t84t 9fne 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 spel7 3qcu8e dzl4ed of sound. The observelz7el48 d3cq ur 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 obz0w+*8baduh ecrzk34x bb e *3server at one-half the speed of sound. The obs+8bxu3*3wbhz *0d 4e rc kaezberver 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 speed oodf m5 8vsw)a,v jc(6af 30 m/s away from the source, what is the frequency heard by the observer? (The)s ,cjmv(oa86f5 wvad 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 * pgo0v:hz,nkyvn *m1 800-Hz siren. 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 wn yn *z p:v*1mkv0ho,gho 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 trais djza h/mhj0;1p:q-w n approaches with a speed of 30 m/s. The frequency of the train horn is 600 Hz and the spez/j dqh:a1;j0pw sm- hed 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 blows its 400-Hz whistlezc/00al. ptslwzu96ga jyi +-. Take the speed of sound to be 340 m/s. What frequency do you hear?gs9pzj .l+ a0zw 0uc /tali-6y

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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. ik3 g8hytw vw: 8kib))The train blows its 400-Hz whistle. Take the speed of sound to be 340 m/s. What frequency di:i)3tk by8v hwgwk) 8o 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 f. kg8c2tpqkvyf639f z ub/n p:rom you at 120 km/h. The train blows its 400-Hz whistle. Taken uc3k vzf gt bp:f.6k/298qpy 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 km/h. It blows its whistle, :pzr03c6 wce3js sg)nand you hear a tone of 400 Hz. Take the speed of sound to be 340 m/s. What is the actual frequenjp3swr:0egc 6s3 )cnzcy 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 :n+)t lyto.21*pb. by dqestfis 340 m/ft*t+ot)blp:yyqd .1en 2 b.s 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 500hv vd47k n97vee*w 8dm Hz. Assume the speed of sound in air is 340 m/s. What is the frequency heard by an observer if the observer is approacvhvnd*49md e7e7w k8vhing 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 obje/ppcp :7 jdmw)ct. A 40-kHz signal is sent out, and a 42-kHz signal is returned. Assume the speed of sound is 345 mpjdp:cm /)wp 7/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 shockq ni6a0z) vuf4 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. W5spdy,bo,(v m hat is the half-angle of the conical shock wave bo5 dv,y(psm ,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 Europe with a Mach numl7zh,x*kqsa39;t *c8 -rpntcjwoh )pber of 1.05 where the air temperature is8*ctp, j93;ht- qzpslh7kw)ca xn *or $5.0 \; ^{\circ}C$. What is the speed of the plane?

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