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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 y:0x b7dbv8qh 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 conductep 9gho28d fhs/z ds(0lvl5b: xd 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 soua,jncpi ko8 l4rc*:xo2r1 n6lnd 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 inel+t6osi* 5m :uvfe2t creases, what happens to the velocity of sound? (Assume that all other factors r+olmv2i*e:t5s 6ufte emain 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 8u+lfs69qi qu31 xxrt-. npzoHz sound through air u -qi. 1qlp9zsun 63orf+ 8txxis

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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 v 8sv,1sedn*n of a 200 Hz sound i,es d81ns n*vvn 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 frequenciacq1m2 8 kfrp(es 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 lvah/f,i : oqknch/4 (less 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 7b di ,.gf2j2pl* rvyrsource is emitting waves uniformly in all directions. If you mr.* 7dp2,gib jrlfyv 2ove to 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 w.vvxhoo z( rv1;e6+,)w ts2oiz m +3.bwh puljaves, intensity 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 source is I. (a v.thuzr) v 5bp(y: .q1tpmmWhat is the intensitymhr1(pbt)z( :5vpuytvqa.. m at a distance 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 iqqocx y775q1t n all directions. q1t7x7qqc y o5 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 ihe f81(+yjcm rs radiating equally in all directions. Wha +hyrfc 8e1(mjt happens to the intensity 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 sounv4m:g5xwwz b /d 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 tq7* tdw1y tj-speaker emitting a pure tone. What characteristic of the sound increase -7wqdj ytt*t1s?

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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 musica 8l5f ku +2tj jxh.52thaa)mrrl 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 mpbsj6 l js16sbu/0 aru6p) yb1usical 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 cu8 6u;.qkfjj lfu-9 8lsole-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 wav q 8i-t:h tjzh6-1.g0 vtgjulies 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 sound wave gen yd9b)+v,l7 p9dxsqt ferated by the guitar as a result of this vibrat 9tqvx,flb)y 97+sdpd ion. 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 pipeql5*d+jo: -d v;zdgd d4ag+kp which 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 wavelengths of the threxh3d zu 2q/d njc -oue91: r6v3r0ohtie lowestv 0hn x1o:u32-e c/trid3h6q9j udoz r tones 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 in an open b vxdpkqd f,4 a.8)1ukpipe of length L is 200 Hz. Which one of the following frequencies wxkqbv dkfpuad4 ) 1,.8ill 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 its fundamental frequency.15dnosnfp2 z(a 2; nedc unt7: Which statement is corrns7z2ntdcpaf 1uodnn2 : ;5e(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 whidjyo5v/ l y oquh +i7w(ps00g0ch is open 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 are thzibw(r uy59ub7 8 2pn64yhfl qe wavelengths of the three lowest tones produced by this p( yflin89ybq7r5uh w4 6b2z puipe?

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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 piwgac(cli, 5 u5pe of length L is 200 Hz. Which of the following frequencies will not resonate in lc, (acig5w5 uthat 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 o 7tmb6l4 rdd,kne end is resonating at its fundamental frequency. Which statement 4r,kdb md6tl7is 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 spe+-n7ml 2mdcpoaker produces a tone with a frequency of 200 Hz on a day when the speem-p27+n cl modd 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 waves should haiv ogk 2yj,od 0 dks*kv+31x1wve

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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 particular1i9d5 ig h w+heaz;8bpk t-u,b beat frequency is heard. What happenbwht1ie u;dah8z9 i-gk+5b ,ps 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 explainm7ygw+j+qy12-bdvukk +y 5mj 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 o7f 4zc)uo+ ljroq:d.n v5hmt/bserver. The frequency heard by the observejqz5)d:ho/v.mf oncl ut r74+ r 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 fromcpbk bc 0+2b 7et y*8q;1sx+ovagco1l a stationary observer. The frequency heard by the observer ioxcb+7*a8ptgv;+ kc2s1 lo ey01 qbb cs

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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 doubleph-x o se c4si 0svp/;oo-p+ibkn,o 5.+a n8be its MACH-speed, its half-angle will decrease by a -/0+o-bbi.ep8 n ss;spa4 nekicoh vo5o,p+x factor 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 kHz in air is 352 m/s. t+4fn9v8hhx ru9 sud/What is the aft/4hhu+r8d 9usnv 9xir 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 in air a1.s9 (s0gkioitg d61u4qj hld t $0 \; ^{\circ}C$ 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;c-1p f mmy2adir is 340 m/s, a bat emits a shriek whose echo rea y-fm;d 2m1pcaches it 0.0250 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 ov xsaf)1h95zecho 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 after seeing a flash od c9eep*kdeg,0qnn- 8f lightning, the distance to the lightninqe -edpe*kdcgn9,80ng 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 froc8,6-hn6e x l(pxtgqu m 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 deep well and hear the splash 2.5 s later. How deep 6d zltuyn.;ge 0vnh4;)4xe3q -kujpcypnj8+ is the well? (Ignore air resistance, and assume the velocity of so gz0 ndkqun64ye-43y t ec).xjjh8np;;+luv pund 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 frequency 500 Hz .rct9 xfq hug: lf.0q6is

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45#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Sound traveling in ai u8fmc d2dv85ir 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 level of a sound (.vkcmbs) ia 7with 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 sounxu2 k:nh9g -th8g.mc cd?

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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 o+s*k kj dh9.o( x,qzbsf 70 dBhkssxz( bj9*ok .q +d, 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 in0uq;k g x;.hkz a garage is 100 dB. What is the intensity level gener.0qkz; hg;kx uated 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 dsug hm hdy65:7qqm6 +vp p0qo*istance of 6.0 m from a source that is radiating equally in a6+:q0uyq5gd pv h sp m*mqh76oll 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 i86e qvbv*e5bi4rdb g6n cji2 zk :jkgnj,f+(- s radiating equally in all vjg4 *i,+ bfrzn8i2:c6njgjbdkk65( e q v b-edirections 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 assuvj96a qcxwm- 5med to be uniformly distributed in all dir -wavq 65jx9cmections. 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 a1ixil+o,hny9p,:j fr distance 5.00 m from a barking dog. What would be the intensity level if two identical dogs very close toil,i :j+1x yr9 o,nhfp 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 intensityi( f *w7 (7tf uw/rwdwdshz2x;)sl-qn level is 60 dB. What is the in fnh f w-ww)zl2w s(sdu*7qi /7;xtd(rtensity 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 ludm5n*3(f txy evel 5.0 m from a point source is 95 dB. At what distance will it befy(*m5n u t3dx 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 kz600h+duugr c6e n9 -+hj0mbc1ymb ztone has a frequency of 1200 Hz. What is the frequency of the fourth harmonic0n 1yu zjche d66kzhbum 0-m0r+c9gb +?

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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. Whata 7ixb3 mz0ojnf2dsj(cq:2g v ; wos/ yq1r5f0 is the length yw fd vaq;527rs xnqj( g2 :jif/sm3 00cbzoo1of 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 +e9 auugdg;,v open pipe of length L is 400 Hz. What is the frequency of the lowest tone tg;9g, uaduv+ ehat 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 the velo 0x5*iiazctg 8 95f;v)*lrcod1dokgwjv4bw4city of sound in air is 340 m/s, what is the frequency of the second harmvb )dv5x8g44w k ;ocjlifcr z5wig*do 9a*10tonic?

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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 5vaid;,:m pia 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 frequency in a pipe closed at one end is 330 Hz. What is the f7hscg/z,wn e/b+ gwa7 are69 nrequency of tha6 g/rnaww7/ e9+ ,sebc ng7zhe 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 - 8/u cdnto6aq7 tizz/closed on one end that will have a fundamental frequency of 60 u/oczi8 tzq/n6t7- ad 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 is6 *haiko(4u yq in a room 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 temperature isz1 spr rq.tk 01llkwd1) tff+yvor(1: $20 \; ^{\circ}C$. 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 :1+ rlaegbwlr0 y0(aglength 0.75 m is played when the speed of sound in air is 340 m/s. Whayrgagbw r+1l0ea0 :(lt is the 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 agtdl9lq e;.p-guck5+nd the other is closed on one end. If the fundamental fr- .g;ecullpgqd5t+ k 9equency 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 eatsx(, 60 owzygch 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 be moved so an wo g(t06x,szy 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 frequem48b+/jqm; yrbqhm ):qn6acn-y4xw .te dg; jncy 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 the person to the other speaker? (The sound speed is ;)gh:b jn;bqeyq.ycm wr6qjt4x/d m -m8+4na 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 frequenci/2oa 5ln e+n9j 5nsspaes of 440 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 frequency of a muft6n/z6bkxb1j,/ p svsical instrument. If the tuner hears a beat frequency of 2 Hz, what is the freq/z6vb6k 1/ n,s tpbfjxuency 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 horncyoe8p /0fyv 1ac avaqhtnm2s *+8dxt 3oy ,)8s are 6 m and 7 m respectively. What beat fp*3812vvc emof syx/q a8hca,an+ 8)ot t0dyyrequency 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 orchestra are fountgv,do 0jn96 k5 )jsnwd to produce a beat frequency of 2 Hz when a frequkgsd,6 t5 ojw)njn 09vency 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 stationarjhm1i)k+ / .d(f a1 dy5tzuhomy 1000-Hz sound source at twice the speed of sound. mm.1 /kdot 5dh f+uj)1zai(yh 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 (norma4cluy +i,4wwz l frequency of 1000 Hz) approaches a stationary observer at one-half the speed ofz ,wcw+yl4 ui4 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 mlvw8r6 0xh9z+.lwvheoves with a speed of 30 m/s aw9wx6.hwz +rhe0vl8l vay from the source, 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 atjweo/)n)grr : y:s 8col,gbq4n (ciu5 35 m/s on a day when the speed of sound through air is 340 m/s. The car approaches and passes an ooy e,(onr8i)uns wg:gqrc5/: 4 c)jblbserver 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 hear8e1o 6a-iqdf i 5o5cfa lmc13zd 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 sound is 31ii q5-oa3ezmo cf 6l5 8fc1ad40 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 kmlbbf i;lbp.z8 tc0r v6.b+b f7/h. The train blows its 400-Hz whistle. Take the speed of sound to be 340lbb6p fr+v;zi870.lb bfb.tc 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 n(y(a/. nsp eetoward a stationary train. The train blows its 400-Hz whistle. Take the speed of sound to be 340pny .n(e( ae/s 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 fsfv7mgu9s * e urerh 0b/*-b3away from you at 120 km/h. The train blows its 400-Hz whistle. Take the speed of sound to be 340 m/s. W/-s*79h*r 3bm0 veusrgfe ub fhat 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 vqq 3t1 og4b9zq+prhm72.( /dfvtzom at 120 km/h. It blows its whistle, and you hear a tone of 400 Hz. Take.7/dfb rt9o4+z(3m oqqv2tv pm1zghq 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 -4 7h;5fkn)gse d(ik ww)l7 phav+gm ahorn is 500 Hz. Assume the speed of sound in air is 340 m/s. What is the frequency heard by an observer if th-s; a5ifwv 7wh(kdgka) h+4 )7 lengmpe 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 50 bz 6h+hzr0jxtl + 6e8.hxmxq10 Hz. Assume the speed of sound in air is 340 m/s. What is the frequency heard by an observer if the observer is approaching the train with a speed oftzlm8 r++ xq h.xz0hehbx1j66 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 sente(nj -l 1ra;of17qodq out, and a 42-kHz signal is returned. Assume the speedf7 -1qo ;j(rl1qdnoae of 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 the c :g.c9feds0f yonical 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-anglem /-) vjxv+z, 9d.op,:u*:cw j qmfnpujangv6 of the conical shock wa9udpfpju x mz+o ):n./6nmqvvajj*,g:- v,cw ve 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 flievu krcytv9e9/ 4 d2vu5s from the United States to Europe with a Mach number of 1.05 where the air temperature 4c5u9 r2yvv9udvt/ke is $5.0 \; ^{\circ}C$. What is the speed of the plane?

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