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 fasf v2,+zv m51m(ef k;f/peppzlse statement?

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 clag .b op66xk65pbvou w1f+p+onducted fastest through

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
3#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the speed of 9ub4zogts2jo*g/rh 1 sound in a steel rod?

参考答案:    
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 thql1mxtbdhxs2ets4 46 c/ -+mbe velocity of sound? (Assume that all othtbc sml/4d-qh1 e+t sxb2x64mer 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 ofz.8)* v n-lz i0itr*iht5qbtn a 400 Hz sound, the velocity of a 200 Hz sound through air isn 5nlt* .*i 8hiq-rtzv) z0bti

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 wavelemu4bs: dv8flh )85,rd8 wl9 ascfd) bmngth of a 400 Hz sound, the wavelength of a 200 Hz sound imv 9u8,dd8fml4 8ss h w)ba)fdlc b5:rn air is

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 frequencjhdu ;mn8 0q8jies greater than 20,000 Hz are 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 tha3.go 50gfaz svzse2r 7n 20 Hz are called

参考答案:    
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 emitting waves u- gs 6ug irx7ed ygp:pl)4/on6r 9k5cvniformly in all directions. If you move to adgpnv5 xr9)/6 y- 7:le ki4g6o rpcsgu point twice as far away from the source, the frequency of the sound will be

参考答案:    
标记此题
10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  For spherically diverging wavesjc821eqxgj g4, intensity is proportional to

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 distance d from tizfwhxd *xs cr/r /4qmho,3;* he source is I. What is thh*i*x/rwh3xq, dmo/4fr ;czs e intensity 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 sound source that is radiating eq c+y ez/dv3d8cnk2)0ink(d,ci ve vs 1ually in all direnik 2 vcezk 0dd ye)viv/8sc+,dn(13c ctions. What happens to the intensity of the 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 sound source that is radiat iq(rkavy kj9*-9 u wsxs,x1ihrth )6,ing equally in all directions. What haw*uk9a tsrjx 1rkq(xisi, ,hy9- h6v)ppens 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 increases +xyh+pv) tfa-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. v3 f;77 ;wh c9k9fnuml:xnucpWhat characteristic of the sound incr9h uc vm wc3;lnpf;7kx79u:fn eases?

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 "loudness" of a musi zp: (3urgbc2 a2wgcio01tap 6cal 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 "m;mmyafn/ 8*h(bnp c0pitch" 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 fromyynq; pb l8szo7s*8 v4xc0gy8 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 displacement wan gy+r;u l +ozbip5*(pnd-; yeves are

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
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 andii 5g b .pg3,kmij7:zd3ria c1 the sound wave generated by the guitar 5g3.7cimgi r 3k,d1aj:i bzpias a result of this vibration. What do these two waves have 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 which is open at both ends, ti; 4cc a.irzc-d*yu o3here

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 of the theq,6m3/z. soo sj6 /;v6uuos mgwvbe lsz,:2sree lowest tones produced by this pipe szs w/m6;vzuv j lu6/.ssosg3e,qbo eo2:m,6?

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
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 oi4eo y hkuhgr3o(g/m8: 5m:s df length L is 200 Hz. Which one of the following fre: g54:ryemo/3g ihs(kom8 hudquencies will not resonate in the same pipe?

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 L ishf60d ;emkqt+ resonating at its fundamental frequency. Which state;dhf0q+ mk6t ement is correct?

参考答案:    
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 op1eeen.):nqv cy, 0svjen at one end 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 of theya0 e++bmd lmm c3/;yqtr)+ tf three lowest tones prodt 3+mtyrmq+ad fy0/;lc e+ )bmuced by this 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
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 t1dcxx7 +k r.nzhe followinz7nd . krxcx1+g frequencies will not resonate in that pipe?

参考答案:    
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 r .;epu lrije,e;5sm7frequency. Which statement is u5;e s ri7mre;le.pj,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 between two speak58/ yrg5fg-9b r wg7ed6 t;c1cacdirvz 2l 9nders driven by the same source. Each speaker produddat 955fd rrnc y6 g8 2 ;-crv1bgwigec7/l9zces a tone 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?

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 sod7nkkz9ix:e fb elj:853 fxh-und waves 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 together and a particulaz3z wl(ig:1t ir beat frequency is heard. What happens to the beat frequency if the i3g(z1lwit: zfrequency 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 explapnh9+slc;u 4ytc yvq8, 3k7hzins

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 obsmftu1-ti c6. odt)m/h erver. The frequency heard by the observer iomth-6)m1t u ./ cdftis

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 he4/zco22(xba p4m-lom iimiy7 2 n 2frcard by the observoai(i7ypmrmix2l2 4of-c2/cb m 24zn er 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 double its MACH-speed, its half-anglep+xui--nsxf0 ( rwvl pq eq;,0 will decrease by a fac p0ps;w,(xqeuf 0-vn+qr l xi-tor 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 sound of frequency 45 kHz in air is 352 m/bsf) z oy6,:7hkq0 nbms. What is the air tb ny7k, )6 zh:qsobm0femperature?

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
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 a( m8 h:uiu*obft $0 \; ^{\circ}C$ to the speed at $100 \; ^{\circ}C$?

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
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, a bat emits a shriek whose e/ nq2:,oloj4vm was(ycho reaches it 0.0250 s later. How far away was the object that refmq/o(nwaj 2sv,o l 4:ylected back the sound?

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
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 q2q,pglcg .m5 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 after seeing a flash of lightning, thde jja*v.67/fez6f7dd; eiz- 4:9umd flvgnt e distance to the li gfd 7a u6 zdi 6vd fdfj7;e4t-eje.9*zmv/l:nghtning strike is about

参考答案:    
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 cliff on a c w3-fei.w c,jday 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:    
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
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.xw7 aof717eg s5 s later. How deep is the well? (Ignore air resistance, and assume the velocity of sound is o7 afx7 7gews1340 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 airzbd o;c2ave;s:r 0w )n of a sound wave of frequency 500 Hz is

参考答案:    
标记此题
45#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Sound traveling in air aybwxi 8. c4- 6+ iwrfquo)/tgit $23 \; ^{\circ}C$ 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 level of a sound ; e1w4azzt up. yd:q1hwith intensity $10^{-3} \; W/m^{2}$?

参考答案:    
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 soueq t;be0sy, 4gnd?

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 ofp xfz/h lk6n 8*-oiub3 two sounds with intensity levels of 70 dB and 40 dBni-lu*z f /6k3b opxh8?

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 dB. Whfr qk6zv2fb1j mq622dat is the intensity le1b j 6z62m2dkqfr 2vfqvel generated by one engine?

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 distanjqvb3-v:v1)eny .ei n s0ywi +zt-ffq *rtt30ce of 6.0 m from a source that is radiating equally in all +b10eyq vi*)0tft r- s3in:vf3ejq t.vwynz-directions is
$6.0 \times 10^{-10} \; W/m^{2}$. What is the power emitted by the source?

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
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 radiating equally iv7:lxh ye1 xa5n all dir5hxya71vl x e:ections 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 delivers about 1 mW of power, which is assumed to be uniformqwk+)rpa,cdv*rkf:8 ly distributed in all directions. What is the intensity level at a distance 5 ) cd8 rqa,+:kk*wfpvr.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 is 65 dB at a distance 5.00 m fron7b d5tc -su:w+ v-0pggit1uw m a barking dog. What would be the intensity level if tw-:wtigc7+1us-p5vn w0 u bgd to 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 source the intensity lee) 30ehvsva gptm,d73vel is 60 dB. What is the intensity level (in dB) at a point 2.0 m from the source? Assume thpga vthv7, 0mse3de) 3at 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 levelv .i4.e-ttf- )h xtk6irdckd: 5.0 m from a point source is 95 dB. At what distance .4):x.die- k fvttd 6-ctrkhiwill it be 75 dB?

参考答案:    
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 ftdkos5iq7/ 8f b,d- rji cu.ugp8tr0.requency of 1200 Hz. What is the frequency of the foubg uuiofpt s0c rk-.8.t75r/,iddq j8rth 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 openl:du e /-c shyhim+pq,b ,x5t+ pipe is 900 Hz. What is the length of the pipe? ct:dx,sh+lqm+,ubhyi/5- 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 5w2vpt8x0v (o/5lxl9 wo cv ngan open pipe of length L is 400 Hz. What is the frequency of thpg(5xltn/lw vvo2v w9c5x 08oe lowest tone that will resonate in an open pipe of length 2L?

参考答案:    
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 ends has a length of 0.80 m. If the velocity o7t;yp-lx bio*d :rm l,f sound in air is 340 m/s, what is the frequency of the second har lb;y-7 xm:i olpr*,tdmonic?

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 iu5/lwsj2 u;5gfx ot w;w)joy.s in a room where the temperature 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 at one end is 330 Hz. Whsxfsyhty. k5+.(d, hbat is the frequency bf(ysy,d.h.s 5t+hkx of the third harmonic?

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
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 have a fuu;h.i8(;su l*l ae: 5lhrzqku) m8aho ndamental frequen(u ul.:*lihr;olk8s u 5mha) z8ahe;qcy of 60 Hz on a day when the velocity of sound is 340 m/s?

参考答案:    
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 a-qy pugyvd w;1 43 -gdvbplp;*0z1 bathe temperature 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 temperatuqg0.eq gw(6lky hsn9ogj9- i0re is $20 \; ^{\circ}C$. What is the frequency of the second harmonic if the pipe is closed at one end?

参考答案:    
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 is p)c5vpv/5;uawndt(h t-xa q* tlayed when the speed of sound in air is 340 m/s. What is the fundamental frequa5vnh-/*atw) x(tq;5p ud vt cency?

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 of the.4har ;fbhtbnfq:.s7flgm9c8 mg *ugk 6w,f ; 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 freqgfrus ,qff.*lg48hanwfh k 9bb6m gm c7; :;.tuency of the closed 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
67#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two adjacent sources qr:) 0wfl3)6ji el qjecvne 8;each 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 observer in front of the sources would heav:j3 6wcl 0j qfri)) le;ee8qnr no sound?

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
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 cicywoarw76 * a)v. /vfrequency 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 tha/va)w 76i owcvy .*rce person to the other 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 frequencies of 44/rb rdd 85d5yf0 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 fri )kb 3mexf-x9o,m1i i(.xnxxequency of a musical instrument. If the tuner hears a beat frequency of 2 Hz, what is the frequency of the inst9x-. i(kf13x,) ixn xm eimoxbrument?

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 prk 2 um+rbd;km;oduced by two horns are 6 m and 7 m respectively. What beat frequency is heard when k m br2m+;dk;uthe horns are sounded on a day when the 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 violins in an orchestra are-.8rkmt lepw,w* i2foxm( 7b ,bn:a ae found to produce a beat frequency of 2 Hz when a frequency of 660 Hz is played. What percentage change in the tension of one of t7maeamtbei. pwf,8 b(w lo-*2nx:,r khe strings would bring them to the same frequency?

参考答案:    
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 so2zwx d (35qdzfund source at twice the speed of sound. The qzz53 d(fwx2dobserver hears a frequency of

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) approaches a stationary observe;y ,,mlav/p war at one-half the speed of sound. The observl; yp/a, w,vmaer 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 Hz3 t;(cvt8ymh+ 2f aexz. If a listener moves with a speed of 30 m/s away from the source, what is the frequenc( mte;2czythf3x+8 vay 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.+r4r24 xfldy a 9;oxpv It is traveling at 35 m/s on a day when the speed of sound through x f9l +;ya4 rrxv4po2dair 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:    
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
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 approaches witgvzvvkh1-8ozcr+ . ml 95ut9rh a srtv z 8go m.hvv9 -c915u+krzlpeed of 30 m/s. The frequency of the train horn is 600 Hz and the speed 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 12cc413omf wncuqiel2s -10 v)b0 km/h. The train blows its 400-Hz whistle. Take the speed of sound to be 340 m/s. What frequeuvn1mcc3b ) is ol-eq 02w1fc4ncy 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 0zdey4mn ts3h4,(gt1qxg 80e7tk n: h/l p wpstrain. The train blows its 400-Hz whistle 18qts3/ :dz h( kstl,expnpnmh44e0t0ygw7g. Take the speed of sound to be 340 m/s. What frequency 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 from you at 120 km/h. The train blows its 400-Hz whiso rtw3kq1*xm ;u:c/xhtle. Take1khxw:c*; r/uq3xt om the speed of sound to be 340 m/s. What frequency 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 awad9:t*lklp 8twy from you at 120 km/h. It blows its whistle, and you hear a tone of 400 Hz. Take the spell9 *t8:kp tdwed of sound to be 340 m/s. What is the actual frequency of the whistle?

参考答案:    
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 hornp1 ssg) v1*(cbx1djj r is 500 Hz. Assume the speed of sound in air is 340 m/s. What is the frequency heard by an observer if v1d) sjg1 sj(r1px *bcthe observer is 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 is 500 Hz. Assume the speed of sound in air iudyk7s/t g85xs 340 m/s. What is the frequency heard by an observer if the observer is approaching the train wixg7 u8ts5k/ dyth a speed of 30.0 m/s?

参考答案:    
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 speednzfm 2ye5onm34v m* p5 of an object. A 40-kHz signal is sent out, and a 42-kHz si3myof2mn en vm4z*p55gnal is returned. Assume the speed of sound is 345 m/s. How fast 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 p u,y+8ll)07 zzn vz jznui5njxd81*xhroduced by a supersonic aircraft is $60^{\circ}$. What is the Mach number of the aircraft?

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
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 83f2m,cykk3 v/ it-syqggot/ half-angle of the conical shock wavey3i32qyt ck/votf k -8/ sggm, formed?

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 frommydl(*f - mm6b(yr280 pnp9 o fv,bsel the United States to Europe with a Mach number of 1.05 where the air tfm- nyybp lf 2 elsm9r8(mod(,b6*0vpemperature is $5.0 \; ^{\circ}C$. What is the speed of the plane?

参考答案:    
  • 答题人:
    •
    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, 2024-10-3 11:25 , Processed in 0.423162 second(s), 195 queries , Redis On.