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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 gk4:y wsck uxvzl/-z0;un0qbq-m*v) 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 eviu3 mfk9,3smk 0u6fconducted 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 i1hfm hbumyu979 2r)krh*x1 ka 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 yj z2r8f fx(oyzb9j) (to the velocity of sound? (Assume that )fj(zf b8r(oz2 9xy jyall 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 velocity of a 200 Hz sound th i.likyqi7p /+(stps -rough a +ky/iqspp .ti l-s(7iir 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 r5ro5k)h9+ xvbgj8n*w / xwwa 200 Hz sound in g*w x)x5arho 8 59wrvkbwn+j/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 with frequencies wh)26o6ua ma; t 4l5ma6erach 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 2g ,r5 qdjli i,nr01(yn4 yf3 c q*bkj04lldzkare 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 2-)mj.,q /skxqhty a ywaves uniformly in all directions. If you move to a point twice as a-m ,)qjsxkhyt .2q/yfar 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, .fh+*epr6 le gintensity 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 from the so;p8n+ +b,g jhn b*nlwxurce is I. What is the intensity at a distannj+x +,;*w8gn bbplh nce 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 equally in all dj 7pmm)yo+;t ep 1vmp.irections. What happens to the int+)ye mm7mppv;o1t pj. ensity 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 isqj g2u40cu8 ax3u3co n radiating equally in all directions. What happens to the intensity level of the sound? It d402cojcna guxu8 3q3urops 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 -ubxltl;prg)4k:zw9?

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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. Whxg., r/whzld/ at characteristic of the sound inc/x/r,gw zhdl. reases?

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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 musi pw.kiwgmf*9 3d9f1y bcal 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 nonwja u*k: 6bg5jv74ilte?

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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 wate w7 v;c7t1ivt3qr v0u.u(yx rcl)kjp 5r

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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.c :szwpcd4 w;aves 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 guitagbm)e isfz8*2qvc+z+q ,( pks 1v (kvtr string and the sound wave generated by the guitav )fz+2+gv(*p8kqcbs v(tz1qe,mk isr 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 i1p6v,9d yibajs 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 lengt5ho4a1odq ; k,bfokvk.o)o (e/c -j qcbsi0p6h L. What are the wavelengths of the three lowest tones producepb0 q(-6d. ,)ko kcf5c;4oaoqvjkoieh s/ o1bd 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 of xn6 ;u ijq2lc2length L is 200 Hz. Which one of the following frequencies will not resonate in t2c2n ;jqlui6x he 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 frequencyw.ypyj;g3( du. Which statement is coug.y3j;y(w p drrect?

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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 other65u 6 u2hzm4dz)wd 7 im9oyxa 0voakp7, 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 lengen. / 1qvxtnb nw,dt d*wd4/,fth L. What are the wavelengths of the three lowest tones pddw f*v nnwbe,d4n qx1tt/./,roduced 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 lib*edsu+ .4oaf v-7sfength L is 200 Hz. Which of the following frequencies will not resonate in that pipebai7fv4* .ous -+ds fe?

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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 closeduc)+8f ,cws3 mmhtz.i at one end is resonating at its fundamental frequency. , zmu3+ tw) cmfs.chi8Which 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 afg*-:alnv. dx9;kr /cy p h-wthe same source. Each speaker produces a tone with a frequency of 200 Hz on a day when t kd;wcp*rvx h9gl-yn:a- a./fhe 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 bev;(si fqe qmveo:/ 4,bats, 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 so3 a4 (iaxxc,dyunded together and a particular beat frequency is heard. What happens to the beat frequency if the frequency of one of i daycx3(a,x4the 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 expla 7jmn*r5xp4 zcins

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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 hear,l0plec u.-ewd4md : rk1 p1( cglvyv8d by the observepue: 0dlyc1rpgvlc., l-dk 1w( 4em v8r is

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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 obsmrf m.v hj1,v.erver. The frequency heard by the obh, jv1.fmm v.rserver 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-anglc) r(;ytuvj+hq.b m ooaz*2 v*e7kvs4e will decrease by a fac.aky74bre ohz2vmv+ t* c vu)q*s o(;jtor 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 sncixh* ekx0w/ +mua2/ ound of frequency 45 kHz in air is 352 m/s. What is the air temperatura2wxui*ex0/ k h n+/cme?

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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 sound in airh,gcxb3zg:u 7 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 so f)h/ y4assktcei gbzh6, 38c7und in air is 340 m/s, a bat emits a shriek whose echo reaches it 0.0250 s later. How far away was the object that reflected bac 3cgck i 6/zsfy),8th74sbaehk 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. The3jlb7 .: udvqa 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 wsy*av/cn+s 65oojv*, the distance to the lig/ s*soja6* y5vn cvo+whtning 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 thei.0tfoi d z93g 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 and hear the splash 2.5 s later. How deep ihx )k5 cwewoz0+td .-fs the well? (Ignore air resistance, and assume the velocity ozkod wx.50c+h )te fw-f 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 wav;uoye h(h uy34e 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 air x1z wh;leoxm5a7f 9d8bc1 zl3 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 lev)yf9h*:b p8uq hxk6*v5qpt ol el 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 of a 70-dB souno *owze i1-r:pd?

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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 ,)32m771wg0 sfufq :ctszlssr 2kefe intensity levels of 70 dB and 217s2ffstsr7)sk fcq e0z l,3w: em ug40 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 :bq7 lv: mxsyr:r 1t4(8cpq rza garage is 100 dB. What is the intensity level gen r(7lv:ps4bxtr q:m q1yz:cr8erated 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 from a source that is radiating equal+nh/9g (k*ll1gkytkvq/4d qjta;r9nly in a +(r*tag/ y/4knl9;jqdk9l1h vg tnqk ll directions 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 *-/mvvyds x+ uis radiating equally in all directionsy dsxu-m*v/v+ 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 uniforgl y*b95 qpa)eq3(ds *mliui1mly distributed in all directions. What is the intensity level am9ieb u3pd*gq)q y(1i5 *sllat 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 d.s ,)gb.g a5cej dwtz4og. What would be the intensity level if two identical dogs very close to each other are barking)e gwtzg.sba4 5d ,.jc?

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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 intensitw+du; 8*atm3,wxwtv b ezo b1:y level is 60 dB. What is the intensity level (in dB) at a point 2.0 m from the source? Assume that the source radiates o3awb,ubt ww: v*z8;d1te m x+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. At what distans+(: btmlijr4 ce wil(s:trmbl +ij4 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 complex tone has a frequency of 1200 Hz. What is the fr 2d. bwz1f/j6sb5jn 5wr nr1is )sa(omequency of the fourth harmon.1 b2 sndrj (mnsjs 5rb/o1f5aiw)6z wic?

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57#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The frequency of themzf.b;v +dk *j d,t0xn third harmonic of an open pipe is 900 Hz. What is the length of j+xm vn b0,*.kt;d fzdthe 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 resonat 3 (b)oj6/x)vedkjz4khyrua+o n-2ike in an open pipe of length L is 400 Hz. What is the frequency of the lowest tone thatjax d4(e h2) 63ury oo/+k zv-bikknj) 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 80 nha5 x0/2t+ +h bqojhhfxdn0.80 m. If the velocity of sound in air is 340 m/s, what is the han2+ j/h0q +x5xnf8ho0htb dfrequency of the 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 thi+wt otx gv3df/dynlm 3c .6)*e 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. What ikiz, ft ffpa17td6t*/s the fre * 1ftz/ kd6p7tf,afitquency 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 closed on one end that will p8sjte4x4nyr 8u-(wxp/r9sb have a fundamental frequency of 60 Hz on a day when the velocitj88sy-bxsr /(xp ptnw 4 9re4uy 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 roa -jwspf 1*ay.zhgo-6 om 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 .mt- q6kw9w5k v,h fj)4mpit dthe 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 the0l s9t cw+d8tp speed of sound in air is 340 m/s. What is the futts w+8cp9ld0 ndamental 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 5g+7kf e*jkhnt4zy1)gp imi:wa;.e s is open and the other is closed on one end. If the fundamental frequency ofe)w5:*iefzyijh4g sk7gkm p; 1n +t.a 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 eac d 8oxah4mh7zz8mtw83h emit a frequency of 800 Hz in air where the velocity of sound hdzw8ta8 34 8xmom7zh is 340 m/s. How much farther back 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 fr hpnok+308a phequency 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 distance from th8n ha3p0+o pkhe 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 is the beat frequwaa3-l hk*7ya(zvj3.( p mvtu ency?

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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-Huwup2vgs umegd+u,8hy . b52h(oa1 i5 z tuning fork to tune the frequency of a musical instrument. If the t.s hop,g55au (uihg+vy mu2db82w1 ueuner 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 produced by two horns are 6 m and 7 m respectivelhshy3h, ah td.9nj7(hy. What beat frequh hasn t3,hd yj9(7.hhency 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 violiq :/ufhyatdh yw::o5kqjq9 *-n strings on two violins in an orchestra are found to produce a beat frequency of 2 Hz when /qh -* :q9yfq5uyta:j: ohkdw 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 so 3; *f7 3 f*+w jb eyuhe8d7hf2t-mexynjmvlc.urce at twice the speed of sound. The observer hears a frequency fm n- m7f ex+w7hhdu.cy*tfe*lj8jvb3; 3 e y2of

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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 obsero6qlk16 a )vmmver at one-hal6am6l)1v mqko f 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 listener moves with a speess(bn8g5 oe7s 9-2e-wox+rj zxb yen8d of 30 m/s away from the source, what is the5seny-8w9e +s 28 e7r gxo- os(jbnzbx 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 w)xj xdc2gl.2 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 observej 2d.xl2)c gxwr 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 whe lgyq*9r.1tbwy nd ooq02d3l 1n a train approaches with a speed of 30 m/s. The frequency of the train hornw9 bn*gl3t .2 q1dld1q 0ryoyo 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 atcj+*/ qf0(lnndz be+p 120 km/h. The train blows its 400-Hz whistle. Take the speed of sound to be 340 m/s. What frequencl+dp(/ce 0n zfn*jbq+ y 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 tray1p/qq..i ma*z69qczy n 2fsyin blows its 400-Hz whistle. Take the speed of sound to be 340 m/s. Whaac*syy2q1pfq9z /z.i mq y6.nt 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 o /9cp pzq y3a xm/ ;:trqu-wryz/59sj120 km/h. The train blows its 400-Hz whistle. Take the speed of sound to be ;/jwoxraypqz y9: cm/95r/u3q-pstz 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, and you :+*mybvsxirzb2)o )g,9li mf hear a tone of 400 )z bg2l)o: f+*vs ybi,xr mim9Hz. 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 500xj g/1-vlt6 ,z;nis dd Hz. Assume the speed of sound in air is 340 m/s. What is the frequency heard by an observer if the observer is moving away from tj1zd- x/nl;sv, dg6it he 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 airtjybq z/k dxw2zz)+-saf /88h is 340 m/s. What is the frequency heard by an observer if the obseah8 b jz2-)s twq/+8fxzdz/y krver 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 deter xgtnw,de9; jjqz5j5 qtbq;je e +2o5.mine the speed of an object. A 40-kHz signal is sent out, and a 42-kHz signal is returned. Assume the speed of sound is 345 m/zw;g5jj+jeonqdjet bq q25 t 5;9 ,x.es. 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 proc-p d3mw( vbn6duced 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. Whap+e1pe ea 6 2bcxny(.st is the half-angle of the conical shock wave fornb+2 p( a. 6cee1sxpyemed?

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87#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The Concord airplane fliez-pp46upv2o 3wmu n2ds from the United States to Europe with a Mach number ofpzn2 du34 -2pmp6vou w 1.05 where the air temperature is $5.0 \; ^{\circ}C$. What is the speed of the plane?

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