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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 itb.i60vr jd .ls a 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 conduc5b o4eiq2/;js ,nw- + m zstzr,bip/kuted 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 st8h+ i rurh9vi(eel 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 velocity of sou 5q60(gifh 8t/ ifgknynd? (Assume that all other factors remain co/8 06 g 5kyntihgif(qfnstant.)

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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 velocitww*t.*sbrx; hw 5zza )y of a 200 Hz sound through air*w s w*h.z;t)arwzb5x 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 wavelenglg62+sd 5xz)c/,h nw(f wzzkn th of a 200 Hz sound in air isnx hlk6/s n,zw+(z2c) z5fdwg

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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 thyx z n4dr sb,f.d3.ja 6lvcf0-a-hw4n an 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 ja 1iczjacwa5 c 821c7less than 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 emitt6hvje-gksa* gn2i( 5ding waves uniformly in all directions. If you move to a point twice as far away from the source, the frequency of the ig5 (*vgeah6kdnsj2- 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, intensitydg qp wwnc/ng2 g x15+dx9,x)z 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 atlxb2 ;h z :ybogs318qj a distance d from the source is I. What is the intensity at a distance 2d gys 281b hb oxq3:l;jzfrom 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 dist )hj2z0m 35i q(ynrwyxance from a sound source that is radiating equally in all direzy5ryq( x0jh 2w 3i)nmctions. What happens to the intensity 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 radiating equally in all4z)kuj wk (8sq directions. What happens to the intensity level of the 4)8uqwkkjz (s 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 incr o:*ez8 7(dnwb(dnnxfivun 2)eases 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 emitting a pure tone. What charactbbtjf6qiq u78)l q9- *z4vov zeristic of the st) 86qvbz*qzb 9f jv-4luo iq7ound 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 muswo p+ l2* fdd.yt3xw+5*tvnt gteql/7ical 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 e/qckqz3 yw;in. cz+ sg e1b)u+u0za5musical 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 wh4r.r39h)5n*rdj4 kf, bi 3pcstazyu ater

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19#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Pressure and displacement ;zh;bz6j:hz 8s7flkr-k .qe s 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 and the soundn ,fquhvib,)8 wave generated by the guitar as)f uh bn,8vi,q 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 is open at both ends, therz+4yuvwq h;wv pqo(22 uv*+5hw5 i wdje

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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. qg24m q+yt/jqWhat are the wavelengths of the three lowest tones produced by this pipeq+yq2gmt q/j4 ?

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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 oneopd.q(cpr xav4:+ ug+ of the following frequenciescvg :(+pp 4q x+odau.r 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 684x(h qf3jxla 2+s.pgb nheb its fundamental frequency. Which statemene lhb a 3+.h(pf2bsgx6j 4n8qxt 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 open at one end and cl 8,n7rp1rs:tbir0n ox osed 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. Whay7jk.bqj 7r8r7 klt) at are the wavelengths of the three lowest tones produced by this pitr q7kylka)j7r87 bj .pe?

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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 200n2fb v sf(09yp* 3izct Hz. Which of the following frequencies will not resonate in that *2(pzc0byt if9fnsv3pipe?

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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 resonj,y+) br7hzd ::ozcd nating at its fundamental frequency. Which statement is correct?)7:hjb,z :dco r +ynzd

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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 r.+peg*nx2q 1 p,ks(h gic3pa by the same source. Each speaker produces a to p 1xnk *gaihr2qgsec., (+p3pne with a frequency of 200 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 sound 1r a7r8 wknli7waves 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 particular beat frequency is heard. :1iwaw jedv,u*4hv orgst,,xto6+ )f What happens to the beat frequency if the frequency of one of the tones is increased?dovjsw)t uv hgif e+6x :1,*a4,rto,w

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32#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The Doppler shift expxgc/9ott:6/ ckvpe l; lains

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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 frezu0 kar+p ,wb:quency heard by the observer i w0zr:,bp +ukas

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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 observgjkdo/ r*8w6 a ln0j(ber. The frequency heard by the observerk( nb6j/r*wg jald0o8 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 f 96lrqmi1 yrv +kbx))MACH-speed, its half-angle will decrease by a fact1bxkv6r)y qr+i l)m9 for 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 frequetyf ke0m ,vt 2m wp0eeq7j9on7t(;n5mqm (wf9 ncy 45 kHz in air is 352 m/s. What is the airm( m2y7,fte q0(tnvk pwoef;mn5wj7tm9 q0 e9 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 sound i( he00gdwxx( zn 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 a- o ldzlx txhh 1f0dy*h:,qhq43 .o,wwir is 340 m/s, a bat emits a shriek whose echo reaches it 0.0250 s later. How q.3,yl0-ox , : x hqhztwhdwd*o1h4f lfar 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 .w7zq f bk+a6 ek 3c+s;qy7npvvku: rct, yl30hear 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 . htq- (9eotj4dawx k,s after seeing a flash of lightning, the distance to thetwod,jkqe th(. 9 -xa4 lightning 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 clim* ;hirpd*4zq ff 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 ji:;aw*5j24ki hd- e b-mxfti deep well and hear the splash 2.5 s later. How deep is the well? (Igno i-em: dkj-*5ihtwf2i jx4;abre 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 wave of frequencyupjl0 rh0bj+7kruzj i1iz/57 500 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 atu).gq* vnu-ppi e8b-h $23 \; ^{\circ}C$ 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 withbl. .:nh8;n5dyt q6z/xckrq+vohpb - 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 so: jswce7kert1, t ag8(und?

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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 intensif2 w/tv2)l.lxrfln7 mties of two sounds with intensity levels of 70 dB and 40 dm nv27fr 2. fl/x)lwtlB?

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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. Wh f *qp4xl*5,pa 6aazs,cnph,nat is the intensity level generated by one enginef *qlpz,sah,,pcx *6 nn5paa4?

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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 distbl:.,cy5 po ogance of 6.0 m from a source that is radiating equally in all direp c.y,b5:lgoo ctions 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 distokr q2es: 9ry;cm/5,v: j/:jbeux jyo ance of 6.0 m from a source that is radiating equally in all directions i:ryjex/5r vuyoc; b/qj:o2mej9:,sk s
$6.0 \times 10^{-10} \; W/m^{2}$. 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 )lpj3 y6w4saguniformly distributed in all directions. What is the intensity level at a distance 5.00 m from the g3 aj6s)p4lyw 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 5l.ul7g1 ty,be .00 m from a barking dog. What would be the intensity level if two identical dogs very close to each othe lue.7gtl,b1yr 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 l8yineqm85 vq0 evel is 60 dB. What is thei8ve q508 ynqm intensity level (in dB) at a 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.+ql1,:bc oihzxzkyb/b5 3i q80 m from a point source is 95 dB. At what distance willqbb z+ 5ko1/,qz h3x8ilyc:ib 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 to32yf7ds 5wc yhne has a frequency of 1200 Hz. What is the frequency of the fourth harmonic5 s3d2fyy hwc7?

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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 is 900 Hz. What is th8xx o-wsh(1n6v/) s5kp (pvuujy n:pg s/mb6a e length ofp/ m a:ox(p s/5h) b u8vn6g(wp-yjsuk1vsx6n 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 8c(; 7sm 5pdg+su .fgetdzw,cL is 400 Hz. What is the frequency of the lowest tone that will resonate in an open pipe of length 2Lg mt,sw.dd 7g pcezu5(;+c8sf?

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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 the velocity 9kq-od7qgu;wm6w y,myhc +5 gof sound in air is 340 m/s, what is the freqyk -g+cwmwy5; q7qu,m69d hog uency 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 temperature is(f 8b sbk9ew1o: okj7r $20 \; ^{\circ}C$. 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 is vp6vnii15(w4 rpqa a- the frequency of the third harmonic?1iv paapq 46w-n5i (vr

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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 onehc9o5uedife6b3;1l7jch vw (gh 8kg: end that will have a fundamenta v 1uh 7ghj8lcc;(e :bw9id3okhfe56 gl 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 whedt 3o(xo i(z izqrfd5xh829 x9w0sm1 yre 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 temperu *j 9hm b1gjrsqi6f-0ature 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 a 52ln ek3* fzj6libg4of length 0.75 m is played when the speed of sound in air is 340 m/s. What is the f 6 b3lef*j54l2znika gundamental 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 closed on on*ziz nrr9om yf5 25j5ne end. Ifzorfz n9mj55 inr *25y the fundamental frequency 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 frequency of 800 Hf7.s )x.tnk9p o yr;tys l8(.8srbqjfz in air where the velocity of sound is 340 m/s. How much farther back woul8sy8fsby .o .jqxnfp sk )t7lr.t(;9rd 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 4/h3dirc)1)a l e herithe same frequency 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 poss1a)hihe/rrdl )c43ie ible 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 4 452vg eiahza0 /)lnya40 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 tun.3vx ; ;zinh(vd+pfaf y7n8jse the frequency of a musical instrument. If the tuner hears a beat frequency of 2 Hz, what is the frequency of the in+nivdj;fxh8 (7 spyzv3 fan;.strument?

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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 hwr f6aa g/y-s 9dql3h.orns are 6 m and 7 m respectively. What beat frequency is heard when the horns are/- .adlfw9hsrgy 6q a3 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 vio7f6ydy,0-4 tyl j+u em /grpbmlin 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 percengb70y ym/l-mr j4e6f p+y ,utdtage 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 stationacis x8v0- exbwt+:5yz3q7 nvi ry 1000-Hz sound source at twice the speed of sound. T 0x8nvi-z b: 3icxy+7ewsq5tvhe 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 100 9ixbgvhge(5m: 5 2hrnus 7-kf0 Hz) approaches a stationary observer at one-half the speed xmrv( 95bs i2n - k5:gu7gfhehof 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 :ag1q egei.n8 listener moves with a speed of 30 m/s away from the source, what is the frequency heard by1: nge. gaq8ie 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. 0 l wfu cc;epnt;.rvdq9+plzm:f05 r8 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 who is standing along the roadsi8pl.5dwcu 0;nv+p 0tz;f r:qec9rmflde. 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 appro0( l/3cx j z2jbc2n*l6oxwk;apd bqk8aches with a speed of 30 m/s. The frequency of the train horn is 600 Hz and the speed of sound isj lx2kq ckw32bp;z*(c06 xb/l8jodan 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 at7 wh(.m (rc-l sewkdxv-6ow1a 120 km/h. The train blows its 400-Hz whistle. Take the speed of sound to be 340 m/s. What frequency do you hea- xlm(7h wd 6r.o1vcw-a( sekwr?

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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 j3v0c 7y+7g i*whhllr train. The train blows its 400-Hz whistle. Take the speed of sound to be 340 m/s. What f 7r+3v w0jchyhg7*illrequency 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 km9as ) g)wecbxbl3hk7(k-e9 nht *w q.k/h. The train blows its 400-Hz whistle. Take the speed of sound to be 340 m/s. What frequencyb hle g)ksn .wt *3)w-x9kb(ka9 q7hec 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 itzf)9r,gw-n o ms whistle, 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 wh)mz9fn gwr ,-oistle?

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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 50kvxe+ktr*c -:ayub 7.are0u00 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 the trainybe+a.:v0e-kra uc r*kx 7t0u 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 in9 sxy1z0lv ycx0(u7fimf4sd si;)khjro 7 / -n air is 340 m/s. What is the frequency heard by an observer if the obs019olvrf)ncs ys 77u fimx zhyd;xj0(i 4-k/server 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 anne:v*i zqy2 4:cvc9 gn object. A 40-kHz signal is sent out, and a 42-kHz signal is returned. Assume the speed o zg ecvy i*nc24n:v:9qf sound 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 thq +q j9mtz9:nof d+9yqe conical 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 half-angle of the co8is pfa p3tlx;;;pr b;nical shock wave f; ;bpsl p;8aitf ;rxp3ormed?

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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 Statesc0kto/mjr ,1 z to Europe with a Mach number of 1.05 where the air tempk1m0j/r,c to zerature is $5.0 \; ^{\circ}C$. What is the speed of the plane?

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