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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 statemslw v27n5 q-quent?

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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 cokiguygbk;xwz/rn3*34a o/b 0nducted 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 a l)jj sar f68w8ery4n6 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 happenm3ddkcp 27a )/ bd2u uke(n-qbs to the velocity of sound? (Assume that all other factor3 27)d a-qkdukpue( dbc/nb2 ms 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 40 s3iwvkw5z-8f 0 Hz sound, the velocity of a 200 Hz sound through 8izww 3 -5kfvsair 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 sound ;dp8+ xl7dwmmnijt 0fz/ m .y/inpfi8.z; 7lmw yjddmt0m/x+ /n 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 frequeyf6fc 7 kt3n9w*n) ju d*ca0lyncies 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 , en a fn; m))rwmbj(u*k8b)mxHz 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 emittingx 5i,:yowbd 6edx:qg1p-v- cv waves uniformly in all directions. If you move to a point twievgd15yo x 6:xq:bc- p w,-vdice 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, inten/ wyvlz+xu ;n;*, khcmsity 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 fromdkf 6)ofhg 6:3-x(atf 5iywmy the source is I. What is the intensity at a distancat wffg-o ( x) 5ky3d6m6f:ihye 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 sourc5z wqvrp 2c :3ib4k7zte that is radiating equally in all directions. What happens to the intensity of the sound? It reducez kc27z 3r w5qbtipv4:s 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 al-tg b5we3 l d0y;c9sl sound source that is radiating equally in all directions. What happens to the ins 93dew lcbl5gy -;l0ttensity 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 soxqk90mttny 4;w*g .pwund 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 emitting a pure tone. What characterizj .*m-1 :/(0gmdtd r co07rbj cqm.ocxv1 tmwstic of the sound increamgr/ w: qctdm 11 -.bjzo *7(0rvmmoxjtd0 .ccses?

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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 notd7l8 ib1y wmr.k5ppa8e?

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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 m*jpp00-tb oka tl 8v6kusical 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 w1x 3dcz3jbyhdf. /: zair 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 waves areeoa xie;m30p -q6lo/ e

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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 onznbitea(s 7fo0a a+ 00 a guitar string and the sound wave generated by the guitar as a result of this vibration. What do these twaa 0 fzi(o0n7as0 +tebo 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 1qj365 kjm(t i6rtrl hat 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 leng3q8x,h70agiw/ ,ih -j x v b)3bpbyhbkth L. What are the wavelengths of the three lowest tones ph3b ba7 b0 i8q/,jpbwxkh3h -xgv), yiroduced 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 length L is 200 Hz. Which o)avq 9b1g.eo nne of the following frequencies will noteg)ba o.1 v9nq 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 frequencyq,q56wt1lr sasb +iu -z. pjc;. Which statement is corrcr w t+s ql-a5s1izbu;.pqj6 ,ect?

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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,*p jgcn6+bocs,r( o1 z 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 u0d kdi3tp5n.L. What are the wavelengths of the three lowest tones producki 5ndupt0d3 .ed 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. Which of thm(e 7zgd/k/wlyrow 9,pf0s-y/bl w1 oe following frequencies will ,- y(e7fr wzs//opkbwllgw09oyd /1mnot 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 utqywumdeim8q*,lc02. (dmhg50a p)fundamental frequency. m e.i0)yauqmc5, t(w 0lm28dgp*hdquWhich 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. Eack8z pp8jwrz*m-m1, omp5 qz1 kh speaker produces a tone with a frequency of 208opm8jmk11*z,zw pq mk rz-5p0 Hz on 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 beats, the two sot 3btvjg)l+b kk4m:sxrr-e :7und 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 tzui4e sgsi d85z:-cx4dqv0 l1ogether and a particular beat frequency is heard. What happens to the beat frequency if the frequency of one of the tzd10si4 -v 4zg siq ced8:5ulxones 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 explalukz a88;ne7 9mf 0:o3djr9 mg1f/ xmqrxrp ;nins

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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. Thov2c)c *kswrt0 1(fthe frequency heard by the observe*1to frhcsw( c)vt0k2r 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 observer. The frequency hea-ih2t2 e-vs1acqhil n,i-h j2rd by the observer isji2al2ei1tn-2hvi qc,- - sh h

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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 h .uyrztmpd8.kov-9h 3alf-angle will decrease by a factordr.ukvpz.yth8 o m 39- 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 ultr79/uwj4pn prmasonic sound of frequency 45 kHz in air is 352 m/s. What is the ainjw4r 7u9/ ppmr 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 f ds*wn5s*.hs5 4,mnfs6vc yneb..ytsound 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 sk7bm yt5+u*rhound in air is 340 m/s, a bat emits a shriek whose echo reaches it 0.0250 s later. How far away was the objecm h5 kturb+7*yt 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. o4yb5 guo/+bs 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 lightqu;f v(h((;s nwal rt8v k4)b8rsnex0ning, the distance to the lightning strike isl0hrew f sb48 n8)( vq;ax;( (nrvtsku 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 frobc5p/y0kd paul xm1( 2m a cliff 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 de: /cv4jn1 cfdf7hj7)ls f1wtlep well and hear the splash 2.5 s later. How deep is the well? (Ig7nf 1fh/l s:) dtc4vjw clf17jnore 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 of a sound wab y) wmymcwl2a;9 ;hrh (bs6l0ve 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 at j/hpys 04-mxov*l*t q$23 \; ^{\circ}C$ 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 soundf8/sd1*(, qcapsb 3kn4(n 9kgs gfham 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 drhe5n3ur (:it0- p kwsound?

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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 two4v6v.q b 1ngjy sounds with intensity levels of 70 dB and 4 byv 14nq6.gvj0 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 isgk* ep;q dx iiz2g1v,wi5g7i* the intensity level generated by oneg;vd71p 2 ki i q*x5,igwi*ezg 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 ny v)kt8;z1vb source that is radiating equally in all directbv8kv;t)zn y 1ions 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 s 6 svqsuy(,2p0wnn-jmv7zk5 from a source that is radiating equally in all directions i (z,y v-smn6 5nsv07jkwq pu2ss
$6.0 \times 10^{-10} \; W/m^{2}$. 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 l*tdf7z nueqoh.oh /l.b y38.uniformly distributed in all directions. What is the intensity level at a distance 5.00 m from the dog 3fzetlq7d/ouh n.oh.8lb* y.?

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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 5 we wd4ucl(j s(g6mpm3e14 snt y-q3kwould be the intensity level if two identical dogs very cl-d nm5(4w3sucje p6qk34 y1( swmegltose 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 intensimw-fpssf771 ,l qi +cnty 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 equally in af mql+7isscw p1n,7 -fll 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 distance )atil 4.doui+se i c*m d60sz-wil4ds) mu dc*oia i-i6ezts.+l 0l 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 w2z7ua dd6pe hj,v 3;pfrequency aed pw,6h3;uzd7 j2 vpof 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 harmoni:s3 e9 n i9p1uw r4xubnjygm/.c of an open pipe is 900 Hz. What is the length of n uur/3xy.m si e9 gw94:nbp1jthe 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 4hw+t y642b7hal0 tdkv00 Hz. What is the frequency of the lowesttba0 7d4 hvk6wlh +ty2 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 b6.s: o kifl8 aw,z*tcdoth ends has a length of 0.80 m. If the velocity of sound in air is 340 m/s, what is t *,k tzo a68ld.cfisw:he frequency 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 the 53(h lxbsar/avlf8ezm5- 5k d 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 33p p,*ujick2 -zqpp v6-0 Hz. What is the frequency of the third harmoniczk6uqppvpp,c* j i--2?

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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 shorteni)/ i ebg:3s y)abn lh.3cbj.st pipe closed on one end that will have a fundamental fr: a j.b.bi/s3))c bign3elhn yequency 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 roo-fg* a+jv:zx pm 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 tem2)s ep (zota:ve/ rk*4hv)h wrperature 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 soundzvxgilp /n2(ea,1h 0z in air is 340 m/s. What is t h(z 0z1/vlnx,ap2ieg he 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 open andrxy -p.h fe(s- the other is closed on one end. If the fundamental frequen.fs(p--ehry x cy of 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 each emit a fres.mn6 zxns x/8quency of 800 Hz in air where the velocity of sound is 340 m/ss6.zxm /nx 8ns. 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 sidenjsqhc1e9, yh;tkyt- 6x0 *i g by side and driven by the same frequency of 500 Hz. If the distance from a person to one speaker is 5.00 m and the perso e1sch,6*t9t-hqyiygk ;0nx jn detects little 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 9 tp (ldprf )s78:suw3t/lo uhp)zj7s 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 frequency of a mualy,l74l 5hsb sical instrument. If the tuner hears a beat frequency of 2 Hz, what is the frequency b5ls y74 h,llaof 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 s*ypdkz7z b ;mwj8la pt l/bfq5*+-pofr.l1* 7 m respectively. W7lpy dzpabl;b1 l**+ 5-qjp s/.m*twkzofr8 f hat 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 vio c7g.cjrdp 2o; q9cu0wlin strings on two violins 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 tw 0pjccg;rqo92cu d7 .he 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 st3+sqryv 7i(of :c 4bopeed of sound. The observer hears a frequ(scbo: r3i4fvq+y o7 tency 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 objcd,,vhin7 9ce 9 q5avserver at one-half the speed of sound. The observer hears a freqi5 , d, 79eqvjvc9hacnuency 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 frequencyjr1zidbr, iq)2 );g zo of 1000 Hz. If a listener moves with a speed of 30 m/s away from the sourdq ,j)r)bg r;1z2i zoice, 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 traveling at 35 nz8f j;/* xaj(+sznjba24kngco+4u3 ; yqj oam/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 change of/o*; j 3jz2+os;na8x (nb4f4ynu jkqa jzgc+a 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 observ9 g+o-h w*sc,xoypjt 5np r))zer when a train approaches with a speed of 30 m/s. The frequency of the train horn io z*h g)njt so9)x r-pcy+w5,ps 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. ell *q489p./ qncwdcl The train blows its 400-Hz whistle. Take the speed of sound to be 340 m/s. What frcw9q*4de/ nl8plcl q.equency 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 blow+epcgs 1w5d4*;a p ts zckw+gchlc;76s its 400-Hz whistle. Take the speed of sound to be 340 m/s. What frequency docpegt4+7dsa k5s +c;hc;pwz1 *wlg6c 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 )t a;tq:px ,rlo/9zup blows its 400-Hz whistle. Take the speed of sound to be 340 m/s. What frequency do you heaa/lq po ;u)tptz :xr9,r?

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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 whist* 6x7shidif6 jle, and you hear a tone of 400 Hz. Take the speed of sound to be 340 m/s. What is the actual frequency of the whistij67s*6hdxi fle?

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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 Hzojdrl9.:v3 v anbsr00. Assume the speed of sound in air is 340 m/s. Wh0ndl. :bs9o 0ravv3rjat 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 of8 1. feogmied/ sound in air is 340 m/s. What is the frequenc1dgom e.i/ ef8y 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 sp g z6m- f /eeewrv+h6v5fw-p9geed 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/s. How fast is the object moving?ge9z-ge5vm w+ e f6 p/v-6rfwh

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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 conic+ *n8a2i myrw- gh je3q;4l1 fqxmuyz1al shock 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. What is the hxjm8;7o 2s;4dpiup mzasf9pqb:e(u1 alf-angle of the conical shock wave fop;( qu7am jspe ; x p91dmi:b2zso4f8urmed?

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87#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The Concord airplane fliey j2fpv/1rd ;k 6 76ck25o deamjlqua(s from the United States to Europe with a Mach number of 1.0epjok2u66f y /51cm(ar;dl2v ajk7 dq5 where the air temperature is $5.0 \; ^{\circ}C$. What is the speed of the plane?

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