题库网 (tiku.one)

 找回密码
 立即注册

 

      

上传图片附件

未使用图片

小贴士: 允许的图片文件格式为: gif, jpg, jpeg, png, webp，上传完成后会在上方生成预览，用鼠标连续双击缩略图，或拖动缩略图，该图片就被绑定至本题，显示在题目下方

本次作答已使用

小贴士: 此栏目显示的是当前作答使用的所有图片，绑定到某一题目的图片同时会显示在该题目下方; 删除使用的图片会将其转移到<未使用图片>类别


习题练习：Physics Unit12: Sound
本习题练习来源于题库网 (https://tiku.one)，是在线习题练习的打印版，您也可以访问本平台网站(https://tiku.one/)直接在线完成(注册并登录账号后在首页左侧输入试卷号 70 即可在线作答)，，作答电子化后可随时回放，查看每题答案与详细解析，搜藏保存任意题目；教师使用本平台可以抽题组卷或一键复制他人试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力。本试卷的直接作答链接 https://tiku.one/test70.html
 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

标记此题
1#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Which of the following is a false statemoo6oetl)zc.l1or4 v :ent?

参考答案:    
本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师可以抽题组卷或一键复制他人试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
2#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  In general, sound is conducted fastee)va t 4buz y9grbp.73st through

参考答案:    
标记此题
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 steel rod?8 dd)/mes swrpqir0.0 l3g6zu

参考答案:    
本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师可以抽题组卷或一键复制他人试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
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 ofanpz cl84:pu3lpp v-g( guo6 ) sound? (Assume that all 6vlcp:ap48g)n(ulzug- pp3 oother factors remain constant.)

参考答案:    
标记此题
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 j zbcug-4 l1v*200 Hz sound through az1*uvl- j 4bcgir is

参考答案:    
标记此题
6#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Compared to the wavelength 1ob besdp)+t4 )fjywxh;3 on) of a 400 Hz sound, the wavelength of a 200 Hz sound in air i))o)1 ;p3jy xnt so dbw4e+hbfs

参考答案:    
标记此题
7#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Sound vibrations with frequencies greater than 20,000 Hz p6u /z h6zqc(sare called

参考答案:    
标记此题
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 calle1vu2ju3lswnj af i :i(e4ds2+ d

参考答案:    
本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师可以抽题组卷或一键复制他人试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
9#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Suppose that a sound source is emio1:gmgk4 pc0qp l99t jtting waves uniformly in all directions. If you move9t p1kmg oqp9lj40cg : to a point twice as far away from the source, the frequency of the sound will be

参考答案:    
本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师可以抽题组卷或一键复制他人试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  For spherically diverging waves, intensity is proportional n 8 ,4m vftceus(0h5dtto

参考答案:    
本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师可以抽题组卷或一键复制他人试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
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 2 j l gmr5i at e8,-cto1.5ntuns8po,wdistance d from the source is I. What is the intensint8 5e.,1i c 8juo5,tnolt sg2armw-pty at a distance 2d from the source?

参考答案:    
标记此题
12#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  You double your distance from a sou)kj2/ersv*8 ll .urehnd source that is radiating equally in all directions. What happens to the intensity of .rlve8/uekls) *j hr2the sound? It reduces to

参考答案:    
标记此题
13#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  You double your distance from a soue n08tf3( cfex; t+dc kwti2h-nd source that is radiating equally in all directions. What hhtk38twx(0f;ct de-if2 ecn +appens to the intensity level of the sound? It drops by

参考答案:    
标记此题
14#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Which of the following increr dz pm-v-8w8hases as a sound becomes louder?

参考答案:    
标记此题
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 characteristic oq:lii 7bzbzpx2n1 /x fn5z (:ef the sound/ 5pzzbqb7e zf1n2( i lx::xin increases?

参考答案:    
标记此题
16#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What determines "loudnebh65j :f gqsb9c.fgj 9ss" of a musical note?

参考答案:    
标记此题
17#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What determines the "p xu ft)plo *njy)7:jk:t1 5trjitch" of a musical note?

参考答案:    
标记此题
18#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When sound passes frwhlogh (87hkuue :t0 cama -.,om air into water

参考答案:    
标记此题
19#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Pressure and displacemen*lxj sr- 0quy3 t+2pzt1kke:it waves are

参考答案:    
标记此题
20#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Consider the standing wave on a guitar stri 4 7eqo9v4xk.,tm qcding and the sound wave generated by the guitar as a result of this vibration. What do these two waves hi,kqd 479xecmv4 qo .tave in common?

参考答案:    
标记此题
21#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  In a resonating pipe w pldqkd4vs+d 95 b6bfd.0 pkg oa92w-qhich is open at both ends, there

参考答案:    
标记此题
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 fem :zjc37pe83wiq w6of the three lowest tones produced by this 7e3w:qf3mc 6zp8 wj eipipe?

参考答案:    
标记此题
23#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The lowest tone to re-t.0 n yl)0m psgpa 5d0tk,yldsonate in an open pipe of length L is 200 Hz. Which one of the following frequencies will not resonate in the same pipe? -at tdy0gplk s05)dy ln.p,0m

参考答案:    
标记此题
24#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An open pipe of length : e: qc ;d49)x 3maj8mwad:xcfhrksb(L is resonating at its fundamental frequency. Which statm: )ajrfm:b;:4c9dqsecda ( xw8xk h3 ement is correct?

参考答案:    
本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师可以抽题组卷或一键复制他人试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
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 n 8q9 )t3 8:cgrttezxnend and closed at the other, there

参考答案:    
标记此题
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 wavelengths ofoa5++peuphwr/5*edxe) w7 pb the three lowest tones prodw dxwa5/rp)hpo5 e7 b+* p+eueuced by this pipe?

参考答案:    
标记此题
27#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The lowest tone to resonate in .e7jw1+kll29jrgk k ea closed pipe of length L is 200 Hz. Which of the following frequencies lgk le. jr 1+7ke2wk9jwill not resonate in that pipe?

参考答案:    
本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师可以抽题组卷或一键复制他人试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
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 fundamental fre/7x xiac+m:)s i6qg h;+iy oanquency. Whicagoix :+) cy+msa6xi nqh/7i;h statement is correct?

参考答案:    
标记此题
29#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A person stands betwe)9ejeygt(i7j t fd; 9een two speakers driven by the same source. Each speaker produces a tone with a frequency of 200 Hz on a day when the speed 97e9j jtde(;fi tgey)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?

参考答案:    
标记此题
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 w2 5m;bysgael+aves should have

参考答案:    
标记此题
31#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two pure tones are sounded togeth6siv/9z lwteif i,i,+y 8 l/qcer and a particular beat frequency is heard. What happec /f liq ,elt8ivy ,isz/i+6w9ns to the beat frequency if the frequency of one of the tones is increased?

参考答案:    
标记此题
32#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The Doppler shift exp 8e 946 zfvw mut2vlj,dnr3+pylains

参考答案:    
标记此题
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 thepir1z:m 0da k1e;1uu -dxu4 yf observe 1d1:u;p kx r-uf m4zd0a1euyir is

参考答案:    
标记此题
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 heard by the o+ z8 r/jho: ,gmw*ohhcjar +l3bserver ocmr gzh 8lh/:* 3+jarhw,o+j is

参考答案:    
标记此题
35#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If a jet plane were to d5 rohm 9xl6ucerc31n +ouble its MACH-speed, its half-angle will decrease by a fa6r c c9xmlr31 honeu5+ctor of:

参考答案:    
标记此题
36#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The speed of an ultrasonic sdq b/y9 z)ryd1ound of frequency 45 kHz in air is 352 m/s. What is the air temperatu)zdrq9by 1dy/re?

参考答案:    
标记此题
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 atc 1t-yba0 nx+c $0 \; ^{\circ}C$ to the speed at $100 \; ^{\circ}C$?

参考答案:    
标记此题
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, aia5 am;l-gsw.ew eee -aoke; .dj8.i - bat emits a shriek whose echo reaches it 0.0250 s later. How far away was the object thatw;.eai e-.-el.g-adsekwjoe a ;im8 5 reflected back the sound?

参考答案:    
标记此题
39#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  You shout at a cliff, and heafgo1.8gwp/3 dw; ktez r the echo in 4.00 s. The temperature is $0 \; ^{\circ}C$. How far away is the cliff?

参考答案:    
本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师可以抽题组卷或一键复制他人试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
40#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If you hear thunder 5.0 s dch*1mv9mud98cooour 6 y vo a/e.9 m3after seeing a flash of lightning, the distance to the lightning strike is 3c. rmvmdo ayho9um/ o91o9u 6ec8*vdabout

参考答案:    
本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师可以抽题组卷或一键复制他人试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
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 chn d n e6a6kik*,v8n)gliff on a day the temperature is $15 \; ^{\circ}C$. Approximately how far is the cliff from the observer?

参考答案:    
标记此题
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?

参考答案:    
标记此题
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 sphr.n*vzq2-e: m ,d9 h9 ymvaatlash 2.5 s later. How deep is the well? (Ignore air resistance, and assume the velocity qr .ea-dvmhn,:z *2hvm99aty of sound is 340 m/s.)

参考答案:    
标记此题
44#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The wavelength in air of7wnd2 *:eonju y*; ,-rycu dfs a sound wave of frequency 500 Hz is

参考答案:    
本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师可以抽题组卷或一键复制他人试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
45#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Sound traveling in acx mvs 7mk0bc(q+.n 8bir 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.

参考答案:    
标记此题
46#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the intensity l /c1y -qjfk 3 c::-xvxpv,h;k;fbh tvlevel of a sound with intensity $10^{-3} \; W/m^{2}$?

参考答案:    
本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师可以抽题组卷或一键复制他人试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
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 sounk3vq :9x9f 3 cdxsw+se u06njed?

参考答案:    
本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师可以抽题组卷或一键复制他人试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
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 otg6lq.j :b qxa/y9va vi*q- 1tf 70 dBlj6ay b:g*/ 1t 9qx .aqtqiv-v and 40 dB?

参考答案:    
标记此题
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 .) /bz(snv(mbqf;2ee4f wacq dB. What is the intensity level generated by one engi()( ; ef zn4s/wemvq.qcfb2 bane?

参考答案:    
本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师可以抽题组卷或一键复制他人试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
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 equallgm((3dke 9dihp+b 2-qiude82echlj5 sb )j8ay in all directions i(deb83(ku-b+g ji2 8dchej9da5 iqls ph) 2ems
$6.0 \times 10^{-10} \; W/m^{2}$. What is the power emitted by the source?

参考答案:    
标记此题
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 is radiating1xge ;6e) p1bscxb0 ae equally in ceex 6;p geb0 x1abs1)all directions is
$6.0 \times 10^{-10} \; W/m^{2}$. What is the intensity level in dB?

参考答案:    
标记此题
52#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A barking dog delivec 9xaz+qv0oe 0vp5s7l rs about 1 mW of power, which is assumed to be uniformly distributed in all directions.009eqp7covxa +s vl z5 What is the intensity level at a distance 5.00 m from the dog?

参考答案:    
标记此题
53#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The intensity level bg 3kxsyv*bm,ek8 v/3is 65 dB at a distance 5.00 m from a barking dog. What would be th3v /k xkyges8m,* bb3ve intensity level if two identical dogs very close to each other are barking?

参考答案:    
标记此题
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 sour.r fo ld*.j2mjcy2vht ,z -/uzce the intensity level is 60 dB. What is the intensity level (in dB) at a point 2.0 m fro ,tyruv/*c jo2.2l- .mjz zfhdm the source? Assume that the source radiates equally in all directions.

参考答案:    
标记此题
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 ap: 9dwzg2xvw*r zn, 4n point source is 95 dB. At what distance wirx2 w:4zzpdgvnw *9,n ll it be 75 dB?

参考答案:    
本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师可以抽题组卷或一键复制他人试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
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 frv2. i/hab.lnn8xsx o 5equency of the fourth 2ln.hnasxxbvi/.5 8o harmonic?

参考答案:    
标记此题
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. Wvv n,(qmcdq0fiw+r6* fb5s7 4 e+prrrhat is the length of the piq+p,cr6 d m5inrr b0fwvvs( rqf 47*e+pe?

参考答案:    
标记此题
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. p0azd1ln22xl/ 9xlbwWhat is the frequency of the lowest tone d l1na pzbx2wll29/0x that will resonate in an open pipe of length 2L?

参考答案:    
本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师可以抽题组卷或一键复制他人试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
59#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An organ pipe open at both end,v;k2dpg ns1l s has a length of 0.80 m. If the velocity of sound 2;s,nlkp gdv1in air is 340 m/s, what is the frequency of the second harmonic?

参考答案:    
标记此题
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 tempera( y+mm5v /k8on 4s0j xivhp9aeture is $20 \; ^{\circ}C$. What is the fundamental
frequency if the pipe is open at both ends?

参考答案:    
标记此题
61#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The fundamental frequency in a pipe closed ax87l (iih1kf xt one end is 330 Hz. What is the frequenckf ili 8x7h1(xy of the third harmonic?

参考答案:    
标记此题
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 -pb,+xj ekhgo :(os de: gh+ h9xr9r(ohave a fundamental frequency of 60 Hz ond+9h( rxo: eopjg-h xs+(9rk:eb , gho a day when the velocity of sound is 340 m/s?

参考答案:    
本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师可以抽题组卷或一键复制他人试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
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 h7.gen/x;wrwc5-7u se y z7b.8iu vaktemperature is $20 \; ^{\circ}C$. What is the fundamental frequency if the pipe is closed at one end?

参考答案:    
标记此题
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 temph bqe;27vtvc -erature is $20 \; ^{\circ}C$. What is the frequency of the second harmonic if the pipe is closed at one end?

参考答案:    
本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师可以抽题组卷或一键复制他人试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
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 i 3o/iay 4eabd/s played when the speed of sound in air is 340 m/s. What is the fundama ay3/idb/4oeental frequency?

参考答案:    
标记此题
66#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Consider two pipes ofeu pgi,fi 0)g0 34obsm the same length: one 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 frequency of03 ob0g,u gmspi ef4i) the closed pipe?

参考答案:    
标记此题
67#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two adjacent sources each ec0jj1m y1m: xlmit 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 observer in front of the souml1cm0 :1yjxj rces would hear no sound?

参考答案:    
标记此题
68#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two speakers are pla (q6 77gvga- y*ipn ewg:n/yonced side 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 person detects little or no sound, which of the following is a possible the distance from the person to the other o gq y/7:wa6-(*gnpynvne7ig speaker? (The sound speed is 340 m/s.)

参考答案:    
标记此题
69#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two tunes have frequ5 fddckpf6 k ,d.pg98xencies of 440 Hz and 444 Hz. What is the beat frequency?

参考答案:    
本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师可以抽题组卷或一键复制他人试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
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 freque0j vs/w o6f+zyncy of a musical instrument. If the tuner hears a beat frequency of 2 Hf+jy 6svzo0w /z, what is the frequency of the instrument?

参考答案:    
标记此题
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 respai6wyi+7s w14rewt k9alaw 5-ectively. What beat frequency is heard when the horns are sounded on a day when t19lweaa6+s4 r5-ya wwkwi t i7he velocity of sound is 340 m/s?

参考答案:    
标记此题
72#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The corresponding violin strings on two vib /ueb4wh2bw3olins in an orchestra are found to produce a beat frequency of 2 Hz when a frequency of 660 Hz is played. What percente3ub bhbw 4/2wage change in the tension of one of the strings would bring them to the same frequency?

参考答案:    
本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师可以抽题组卷或一键复制他人试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
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 speed):(or8o pkvbl+ o 5mfi of sound. The observer hears a frequency of+( o)k mrp:fol85vbo i

参考答案:    
标记此题
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)+)g)i6mf ew:wtgkutw m9h.i5 approaches a stationary observer at one-half the spee+iwt gtw):mwi h.m)feg u5 k96d of sound. The observer hears a frequency of

参考答案:    
标记此题
75#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A sound has a frequency of 1000 /b(f7/ia 2mooh lto p/Hz. If a listener moves with a speed of 30 m/s awayo/boi a/to phm/l2 f7( from the source, what is the frequency heard by the observer? (The sound speed is 340 m/s.)

参考答案:    
标记此题
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 m/s on a2nmwv7 q*2 btygl1v9d day when the speed of sound thvl g*d21qmw7 vnt2 b9yrough air is 340 m/s. The car approaches and passes an observer who is standing along the roadside. What change of frequency does the observer hear?

参考答案:    
标记此题
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 approach3lphxvgg4/f0++ jmoc pyt19y es with a speed of 30 m/s. The frequency of the train horn is 600 Hz and the s4 +1oy/cy3p g0xtjghf9 +vlmppeed of sound is 340 m/s.

参考答案:    
标记此题
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-Hhq o81kc/ m8cvp2w6on z whistle. Take the speed of o6w8omp 1/8nh2qk cvcsound to be 340 m/s. What frequency do you hear?

参考答案:    
标记此题
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 traikghjhn*;0 y8 gn blows its 400-Hz whistle. Take the speed of sound to be 340 m/s. What j k 0;g*n8gyhhfrequency do you hear?

参考答案:    
标记此题
80#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A train is traveling away fromvc ;vcf; 50l1gn5rhxz you at 120 km/h. The train blows its 400-Hz whistle. Take the speed of sound to be 340 m/s. What fre155vrc n;zfv gx;lh0 cquency do you hear?

参考答案:    
本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师可以抽题组卷或一键复制他人试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
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 whicr9 t0gaz lb80 oax:j;/s k l)1zkln4nstle, and you hear a tone of 400 Hz. Take the speed of sound to be 340 m/s. Wha kl/ 0z)9 b1nn0tas;gclz:4 rlx oa8jkt is the actual frequency of the whistle?

参考答案:    
本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师可以抽题组卷或一键复制他人试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
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 shh i* s)3t;m g9m-swgcound in air is 340 m/s. What is the frequency heard by an observer if the observer is i; 9smhc-tm3g*)h gws moving away from the train with a speed of 30.0 m/s?

参考答案:    
标记此题
83#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The frequency of a train horn +4ssm/do a/uf3d b;qq is 500 Hz. Assume the speed of sound in air is 340 m/s. What is the frequency heard by an observ3msufdb 4/ doq;/a s+qer if the observer is approaching the train with a speed of 30.0 m/s?

参考答案:    
本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师可以抽题组卷或一键复制他人试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
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/jr iys52cg s+t. c9 40t-jqydeq1t xo sent out, and a 42-kHz signal is returned. Assume the speed of sound is 345 m/s. How fas59s2yq.04o y t iexc- t/1d+cgrqj sjtt is the object moving?

参考答案:    
标记此题
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 produced by a j- xz5gbx2, un2lthl f*7lbu;supersonic aircraft is $60^{\circ}$. What is the Mach number of the aircraft?

参考答案:    
标记此题
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 conical shocz)thtz9 lan*;rt tl91k wave frhznta9 9 1lzlt)*; ttormed?

参考答案:    
标记此题
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 Macbeo qswx+uw( zi 92ka+y 8iss-r8h ;6sh number of 1sw +s9woi ybzrksu 6sx8ia;28- (q e+h.05 where the air temperature is $5.0 \; ^{\circ}C$. What is the speed of the plane?

参考答案:    
  • :
    •
    总分:87分 及格:52.2分 时间:不限时
    未答题: 已答题:0 答错题:
    当前第 题，此次习题练习共有 87 道题
    本系统支持习题练习，作业与考试三大模式，作业考试自动评分，成绩排序一键导出，可设定动态变量同一试卷千人千题
    如果您对本系统感兴趣，想加入我们或者想进行任何形式的合作，请加微信 skysky1258

    试卷内容到此结束!   © 2024 题库网 (https://tiku.one)版权所有

    浏览记录|使用帮助|手机版|切到手机版|题库网 (https://tiku.one)

    GMT+8, 2024-11-23 18:39 , Processed in 0.472523 second(s), 195 queries , Redis On.