无忧得胜-网上国际课程 (5edu.win)

 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 Unit1: Introduction Measurement & Estimating

 作者: admin    总分: 76分  得分: _____________

答题人: 游客未登录  开始时间: 22年07月19日 20:45  切换到: 整卷模式

标记此题
1#
 
单选题 ( 1.0 分) (组内1/70) 切至整卷模式 搜藏此题  
第 1 题组 (共 70 题 70 分)
  Four students measure the mass of an ob1.ft.r x1mbr bject, each using a different scale. They record ther.1t 1bf rb.mxir results as follows:
Which student used the least precise scale?
Student Mass (g)
A 49.06
B 49
C 50
D 49.2


参考答案:    

标记此题
2#
 
单选题 ( 1.0 分) (组内2/70) 切至整卷模式 搜藏此题  
  Four students measure the mass of an object, each using a differehk1 esx0btw(3t2(iq vnt scale. They record ti0be3vh(sx1q2 w( kt their results as follows:
Which student used the most precise scale?
Student Mass (g)
A 49.06
B 49
C 50
D 49.2


参考答案:    

标记此题
3#
 
单选题 ( 1.0 分) (组内3/70) 切至整卷模式 搜藏此题  
  A useful method of ex*nzog l3ps c-q 83das7pressing very small or very large numbers is

参考答案:    

标记此题
4#
 
单选题 ( 1.0 分) (组内4/70) 切至整卷模式 搜藏此题  
  All of the following are base units o 61s3v;l6(flpy n0 y1 +ajukebaz(tn pf the SI system except:

参考答案:    

标记此题
5#
 
单选题 ( 1.0 分) (组内5/70) 切至整卷模式 搜藏此题  
  Select the list which contains only SIwcmxum,7 b21fs*-nhccs*nvh, jm-mg- e cs -2 basic units.

参考答案:    

标记此题
6#
 
单选题 ( 1.0 分) (组内6/70) 切至整卷模式 搜藏此题  
  How many basic units does the SIobv4g 6m3-7zjw7/jd( mg cdzb , lnk4v system have?

参考答案:    

标记此题
7#
 
单选题 ( 1.0 分) (组内7/70) 切至整卷模式 搜藏此题  
  The base SI unit of timeo: n,m vym-g)n)sq.a)u q a1ip is

参考答案:    

标记此题
8#
 
单选题 ( 1.0 分) (组内8/70) 切至整卷模式 搜藏此题  
  In the CGS system, what are the funl w. d9huh3 xsj epzx+w(o1*i6s0i2akdamental units?

参考答案:    

标记此题
9#
 
单选题 ( 1.0 分) (组内9/70) 切至整卷模式 搜藏此题  
  The metric prefix for9 /bytn24o ( qkg,ahnt one one-thousandth is

参考答案:    

标记此题
10#
 
单选题 ( 1.0 分) (组内10/70) 切至整卷模式 搜藏此题  
  The metric prefix fort8 .se42h,rksij4 knh one one-hundredth is

参考答案:    

标记此题
11#
 
单选题 ( 1.0 分) (组内11/70) 切至整卷模式 搜藏此题  
  The metric prefix for one thousanyp.;/(lp*h/fp 9v cbqxjlwh 3d is

参考答案:    

标记此题
12#
 
单选题 ( 1.0 分) (组内12/70) 切至整卷模式 搜藏此题  
  Express the number 0.0.l8d/yw-c be+v2h . ep usujq,2 days using a prefix.

参考答案:    

标记此题
13#
 
单选题 ( 1.0 分) (组内13/70) 切至整卷模式 搜藏此题  
  What is the conversion factor bet8uu l7z3 y 1rew)boapkb.d ;n,ween $km/h$ and $m/s$?

参考答案:    

标记此题
14#
 
单选题 ( 1.0 分) (组内14/70) 切至整卷模式 搜藏此题  
  What is the conversion factor betwmab3t(h4* mlmp5f t ll,2+h ateen $km/h^2$ and $m/s^2$?

参考答案:    

标记此题
15#
 
单选题 ( 1.0 分) (组内15/70) 切至整卷模式 搜藏此题  
  What is the conversion factor betwh mnou kycrj9k-a5vo )0-*hd, za0wt/een $cm^{2}$ and $m^{2}$?

参考答案:    

标记此题
16#
 
单选题 ( 1.0 分) (组内16/70) 切至整卷模式 搜藏此题  
  The position, x, of an o* m(kt3 8eler dq)c-ahbject is given by the equation $x = A + Bt +Ct^2$, where $t$ refers to time. What are the dimensions of A, B, and C?

参考答案:    

标记此题
17#
 
单选题 ( 1.0 分) (组内17/70) 切至整卷模式 搜藏此题  
  What is the percent uncertainty in g0yd+*t i yu xyq/on*(o/jy2hthe measurement $2.58 \pm 0.15 cm$?

参考答案:    

标记此题
18#
 
单选题 ( 1.0 分) (组内18/70) 切至整卷模式 搜藏此题  
  What, approximately, is the percent uncertainty for the measurg,,z7+gvjk e ghoee-c0t qp/;ement 5.2 mA?

参考答案:    

标记此题
19#
 
单选题 ( 1.0 分) (组内19/70) 切至整卷模式 搜藏此题  
  What is the percent uncerta1rmv p4 +s itzgg+m 9jj;)nha*inty in the area of a circle whose radius is $1.8 \times 10^{4} \; cm$?

参考答案:    

标记此题
20#
 
单选题 ( 1.0 分) (组内20/70) 切至整卷模式 搜藏此题  
  What is the volume, and its approximate uncertaign 8 ;omk xhh(xocn6-/nty, of a sphere of radius $1.96 \pm 0.01 \; m$?

参考答案:    

标记此题
21#
 
单选题 ( 1.0 分) (组内21/70) 切至整卷模式 搜藏此题  
  The number of significant figures in 1000ww 9vh4ps0 )m8cvcdxyn.y.0 u1 is

参考答案:    

标记此题
22#
 
单选题 ( 1.0 分) (组内22/70) 切至整卷模式 搜藏此题  
  The number of significant figurvu3js .6scnw( es in 0.01500 is

参考答案:    

标记此题
23#
 
单选题 ( 1.0 分) (组内23/70) 切至整卷模式 搜藏此题  
  The number of significant figure2a gmvyaln049s in 0.040 is

参考答案:    

标记此题
24#
 
单选题 ( 1.0 分) (组内24/70) 切至整卷模式 搜藏此题  
  Which of the following has ** d6*.jpsganomitx/ three significant figures?

参考答案:    

标记此题
25#
 
单选题 ( 1.0 分) (组内25/70) 切至整卷模式 搜藏此题  
  What is the sum of $2.67 \; cm + 1.976 \; cm + 2.1 \; cm$ considering significant figures?

参考答案:    

标记此题
26#
 
单选题 ( 1.0 分) (组内26/70) 切至整卷模式 搜藏此题  
  What is the difference 103.lphhvm(2zr c -1r4h mn73xgf+5 Volts and 102.24 Volts if they respectively represent two measurmepr 3xlz4mh-r hvn1(g+2f ch7mnt values of Voltage?

参考答案:    

标记此题
27#
 
单选题 ( 1.0 分) (组内27/70) 切至整卷模式 搜藏此题  
  What is the area of a rectanglm ) iwdimq/+9o 2 atvay,lh,z+e with dimension $12.56 \; cm$ and $2.12 \; cm$?

参考答案:    

标记此题
28#
 
单选题 ( 1.0 分) (组内28/70) 切至整卷模式 搜藏此题  
  What is the result of 2.43 divided by 4.561 considering sigo4 uhyfu/oh-jw8juy* z f: e5:nificant figures?

参考答案:    

标记此题
29#
 
单选题 ( 1.0 分) (组内29/70) 切至整卷模式 搜藏此题  
  What is the cosine o,jj9xo mbe1 6ff $55 ^{\circ}$?

参考答案:    

标记此题
30#
 
单选题 ( 1.0 分) (组内30/70) 切至整卷模式 搜藏此题  
  The length and width of a rectangle are 1.125 m and 0.606 m, respectiygg42h00z-nqa.pw l* i lg8tzvely. Multiplying, your calculator gives the product as 0.68175. Rounding properly to the 8*y-040il .2gh znqzpwg tagl correct number of significant figures, the area should be written as

参考答案:    

标记此题
31#
 
单选题 ( 1.0 分) (组内31/70) 切至整卷模式 搜藏此题  
  The length and width of a rectangle are 1/ t*bz b4ugs,03a5oxjik lqs4lr o /s)+lby* r.125 m and 0.606 m, respectively. You calculate the rectangle's perimeter by adding these and multiplying by two. Your calculator's display reads3.462 To the correct number of significant figuryba,rgb*/ouibl4+s jr3k4/l q*oxs5s0 zl t)es, this should be written as

参考答案:    

标记此题
32#
 
单选题 ( 1.0 分) (组内32/70) 切至整卷模式 搜藏此题  
  A rectangle is 3.25 m long and 1.5 m wide. Whaqxbq3 )vpat1y*-9.o2 zht ukvt is its area?

参考答案:    

标记此题
33#
 
单选题 ( 1.0 分) (组内33/70) 切至整卷模式 搜藏此题  
  A rectangular garden measures 15 m long and 13.7 m wide. What is the le8rhqq ux9t g:.ngth of a diagonal from one corner of the gardetr.q x 8gu9qh:n to the other?

参考答案:    

标记此题
34#
 
单选题 ( 1.0 分) (组内34/70) 切至整卷模式 搜藏此题  
  Select the smallest vd np7m3f:yhy41.ewbc (l)wm wm9 y,jw alue.

参考答案:    

标记此题
35#
 
单选题 ( 1.0 分) (组内35/70) 切至整卷模式 搜藏此题  
  Write the number 0.00045 in scientific notation (power of ten nfj + k+wd..tbnotation)

参考答案:    

标记此题
36#
 
单选题 ( 1.0 分) (组内36/70) 切至整卷模式 搜藏此题  
  0.0001776 can also be exka*r+-l c cd/ ;*acokupressed as

参考答案:    

标记此题
37#
 
单选题 ( 1.0 分) (组内37/70) 切至整卷模式 搜藏此题  
  4567.89 is properly expressed i4l,7o z t7sdw cwl2zf5n scientific notation as

参考答案:    

标记此题
38#
 
单选题 ( 1.0 分) (组内38/70) 切至整卷模式 搜藏此题  
  Convert $1.2 \times 10^{-3}$ to its decimal notation.

参考答案:    

标记此题
39#
 
单选题 ( 1.0 分) (组内39/70) 切至整卷模式 搜藏此题  
  Write out the numberbt .mtt. ww7ch:xb;* d $8.42 \times 10^{-5}$ in full with a decimal point and correct number of zeros.

参考答案:    

标记此题
40#
 
单选题 ( 1.0 分) (组内40/70) 切至整卷模式 搜藏此题  
  What is the result ofo , u9s pfe3:knv,rjf1r p93vo $(0.410 + 0.021) \times (2.20 \times 103)$?

参考答案:    

标记此题
41#
 
单选题 ( 1.0 分) (组内41/70) 切至整卷模式 搜藏此题  
  Write the number 13.5 gigameters as full (decimal) numbers with standar7; ocgm1jrrnnw 3+en4 +uh- qvd units.

参考答案:    

标记此题
42#
 
单选题 ( 1.0 分) (组内42/70) 切至整卷模式 搜藏此题  
  100 mL is equivalent:ny/ss ;oho.r to which of the following?

参考答案:    

标记此题
43#
 
单选题 ( 1.0 分) (组内43/70) 切至整卷模式 搜藏此题  
  How many grams is forty millit r ;xo67h50bne)cvu y5me hj6grams?

参考答案:    

标记此题
44#
 
单选题 ( 1.0 分) (组内44/70) 切至整卷模式 搜藏此题  
  How many meters is sixty kilopa rr//r.2i mpmeters?

参考答案:    

标记此题
45#
 
单选题 ( 1.0 分) (组内45/70) 切至整卷模式 搜藏此题  
  $1 angstrom = 10^{-10} \; m$ and $1 \; fermi = 10^{-15} \; m$, what is the relationship between these units?

参考答案:    

标记此题
46#
 
单选题 ( 1.0 分) (组内46/70) 切至整卷模式 搜藏此题  
  $0.00325 \times 10^{-8} \; cm$ can also be expressed in mm as

参考答案:    

标记此题
47#
 
单选题 ( 1.0 分) (组内47/70) 切至整卷模式 搜藏此题  
  Which one of the following is not equivalent to 2.50 miles? qiecfo89 m66rfy 4zf;tuk *7w($1 \; mi = \; 1.609 \; km = 5280 \; ft$, $1 \; ft = 12 \; in$)

参考答案:    

标记此题
48#
 
单选题 ( 1.0 分) (组内48/70) 切至整卷模式 搜藏此题  
  If you are 5 feet 10 inches tall, what is your hu 1-xx*qoa2q52lht df eight in meters? ($1 \; in = 2.54 \; cm$)

参考答案:    

标记此题
49#
 
单选题 ( 1.0 分) (组内49/70) 切至整卷模式 搜藏此题  
  If $1 \; inch = 2.54 \; cm$, and $1 \; yd = 36 \; in$, how many meters are in 7.00 yd?

参考答案:    

标记此题
50#
 
单选题 ( 1.0 分) (组内50/70) 切至整卷模式 搜藏此题  
  A hot air balloon rises to an altitude of 600 fathomst bgm3.d ln2s). What is this height, in fe g.dbn3s) l2mtet? ($1 \; fathom = 6 \; ft$)

参考答案:    

标记此题
51#
 
单选题 ( 1.0 分) (组内51/70) 切至整卷模式 搜藏此题  
  The average life of an animal is 70 years. Assume one numerical fi3z3xf jho* ayi9 aa0n):mx8 -xz0 ptgfgure, write thi 3h*za)3ia:pt-yfnzj ax0 f09x8g mxos in power of ten in seconds.

参考答案:    

标记此题
52#
 
单选题 ( 1.0 分) (组内52/70) 切至整卷模式 搜藏此题  
  The mass of an electrono.i25r pu qg9jyxx 7a: is $9.1 \times 10^{-31} \; kg$. How many electrons will make a mass of 1.0 kg?

参考答案:    

标记此题
53#
 
单选题 ( 1.0 分) (组内53/70) 切至整卷模式 搜藏此题  
  How many m/s is $50 mi/h$ equivalent to? ($1 \; mi = 1609 \; m$)

参考答案:    

标记此题
54#
 
单选题 ( 1.0 分) (组内54/70) 切至整卷模式 搜藏此题  
  How much longer (percentage) is a 100 m dash than asvpg bx(+wc5y/)v uq6 100 yd dash? ($1 \; yd = 0.9146 \; m$)

参考答案:    

标记此题
55#
 
单选题 ( 1.0 分) (组内55/70) 切至整卷模式 搜藏此题  
  Which is the largest a2hnn17tryb,l 5ho6 n (qvezby4 )ghy 4rea?

参考答案:    

标记此题
56#
 
单选题 ( 1.0 分) (组内56/70) 切至整卷模式 搜藏此题  
  If $1 \; inch = 2.54 \; cm$, how many square centimeters are in 1.00 square inch?

参考答案:    

标记此题
57#
 
单选题 ( 1.0 分) (组内57/70) 切至整卷模式 搜藏此题  
  Express the following sum with the correct number of ) *hz1ybj;+vju j*dzp ak ,/xwsignificant figures: $1.00 \; kg + 1531 \; g + 2.54 \times 10^{4} \; mg$.

参考答案:    

标记此题
58#
 
单选题 ( 1.0 分) (组内58/70) 切至整卷模式 搜藏此题  
  A football field is 120 yd(a6jw;2 wve7pol 1m.wj u- swcpujf,: long and 50 yd wide. What is the area of the football fiu 7u 2 (wfvp.oe;jwa6cw lw-j:s m,jp1eld, in $m^{2}$, if $1 \; yd = 91.44 \; cm$?

参考答案:    

标记此题
59#
 
单选题 ( 1.0 分) (组内59/70) 切至整卷模式 搜藏此题  
  A ball has a radius of 3.23 cm. What is the volug9d fev)atc c6eug),:me of the ball in $m^{3}$?

参考答案:    

标记此题
60#
 
单选题 ( 1.0 分) (组内60/70) 切至整卷模式 搜藏此题  
  A thick-walled metal pipe of length 20.0 cm has an inside diamha,tcov zpw )1vq+y,0nwz,l+ eter of 2.00 cm and an outside diameter of 2 +lpy, qtn, w01+vvc) azhz,wo.40 cm. What is the total surface area of the pipe, counting the ends, in $cm^{2}$?

参考答案:    

标记此题
61#
 
单选题 ( 1.0 分) (组内61/70) 切至整卷模式 搜藏此题  
  The radius of the Earth is 3963 mi. What imz;rqm j38:* e ixw;lws the surface area of the Earth in square w:qwe;z;8m *jx irml3meters?
($1 \; mi = 1609 \; m$)

参考答案:    

标记此题
62#
 
单选题 ( 1.0 分) (组内62/70) 切至整卷模式 搜藏此题  
  The average density of bloeruf cp/r)+ 4r lw*pii9.h nj;od is $1.06 \times 10^3 \; kg/m^{3}$. If you donate a pint of blood to the Red Cross, what mass of blood have you donated, in grams? ($1 \; pt = 1/2 \; L$, $1 \; L = 1000 \; cm^{3}$.)

参考答案:    

标记此题
63#
 
单选题 ( 1.0 分) (组内63/70) 切至整卷模式 搜藏此题  
  The mass of Mars, $6.40 \times 10^{23} \; kg$, is about one-tenth that of the Earth, and its radius, 3395 km, is about half that of Earth. What is the mean density of Mars in $kg/m^{3}$?

参考答案:    

标记此题
64#
 
单选题 ( 1.0 分) (组内64/70) 切至整卷模式 搜藏此题  
  Concrete is sold by the cubic yard. What is the mass, in kilograms, of one cuzs,;ne8 ctwbwz0nl2 1bic yard of concrete that is five t2w1z0l8et;wbn,s c z nimes as dense as water? ($1 \; m = 1.094 \; yd$, and $1 \; m^{3}$ of water has a mass of 1,000 kg.)

参考答案:    

标记此题
65#
 
单选题 ( 1.0 分) (组内65/70) 切至整卷模式 搜藏此题  
  An average human has a heart rate of 70 beats per minute. If someone's heg; ; cdl: kn9nw0hupob8/nf m7art beats at that average rate over a 70-yr lim; ndbg7u /9 ; fo:8c0pnnlkwhfetime, how many times would it beat?

参考答案:    

标记此题
66#
 
单选题 ( 1.0 分) (组内66/70) 切至整卷模式 搜藏此题  
  A large school district has 300 school busesudn o )q -2/b,akwjz9r. If each school bus is used 3 hours each day, the average speed of the school buses is 15 mi/h, and the fuel economy of the buses is 10 mi/gal. How much does it cost to run these buses in 22 school days i db -,jnu9)kora/wz2 qf gasoline costs $1.20 a gallon?

参考答案:    

标记此题
67#
 
单选题 ( 1.0 分) (组内67/70) 切至整卷模式 搜藏此题  
  A person stands 35.0 m from a flag pole. With a protractor at eye l ug+fz0+cee l)r:od c-evel, he finds that the angle at the top of the flag pole makes wit+c:+oee u)dzc 0flg -rh the horizontal is 25.0 degrees. How high is the flag pole? (The distance from his feet to his eyes is 1.7 m.)

参考答案:    

标记此题
68#
 
单选题 ( 1.0 分) (组内68/70) 切至整卷模式 搜藏此题  
  Starting from city A, a car drives 250 w +ir5nozujf9 ;4gwqik eh8*4miles east to city B, then 300 miles north to city C, and finally 700 miles west to city D. What isiwnh5qr4 z8w9+f; u* 4ko geji the distance between city A and city D?

参考答案:    

标记此题
69#
 
单选题 ( 1.0 分) (组内69/70) 切至整卷模式 搜藏此题  
  The last page of a book is numbereov dbl0du -smc+p:p* :v3nwp7fx, cl/ d 764.(each sheet is double-sided) The book is 3.00 cm thick. Wha7 n0c spdxfu,+v::lc*-m/wo dp3 vlpbt is the average thickness of a sheet of paper in the book, in centimeters?

参考答案:    

标记此题
70#
 
单选题 ( 1.0 分) (组内70/70) 切至整卷模式 搜藏此题  
  Wall posters are usually sold curled up in cylindrical cardboard tubes.: s:*z8gg-miwp nkug: If the length of the tube is 84.5 cm, and the diameter of the tube is 2.40 cm,8: *ium:g:skz-ggnp w what is the area of the poster, in $cm^{2}$? (Assume the poster doesn't overlap itself.)

参考答案:    

标记此题
71#
 
填空题 ( 1.0 分) (组内1/6) 切至整卷模式 搜藏此题  
第 2 题组 (共 6 题 6 分)
  How many significant figures do each of the following numbers have: (a) 2j9zlvp.-nxxev. cq 5:14   , (b) 81.60  , (c) 7.03  , (d) 0.03  , (e) 0.0086  , (f) 3236  , and (g) 8700  

参考答案:    

标记此题
72#
 
填空题 ( 1.0 分) (组内2/6) 切至整卷模式 搜藏此题  
  Add $9.2 \times 10^3s + 8.3 \times 10^4s + 0.008 \times 10^6s$ =   $\times 10^5s$

参考答案:    

标记此题
73#
 
填空题 ( 1.0 分) (组内3/6) 切至整卷模式 搜藏此题  
  Express the following sum with the correct number of signifi .8bf0ih7tfaj cant figures: $1.80 \; m + 142.5 \; cm + 5.34 \times 10^5 \; \mu m$ =    $\times 10^2 \; m$

参考答案:    

标记此题
74#
 
填空题 ( 1.0 分) (组内4/6) 切至整卷模式 搜藏此题  
  Determine the conversio + :ivjgmoua;:n factor between
(a) $1km/day$ =    $mi/h$ given that $1 \; mile = 1609 \; m$
(b) $1m/s$ =    $ft/min$ given that $1 \; m = 3.28 \; feet$
(c) $1km/h$ =    $m/s$

参考答案:    

标记此题
75#
 
填空题 ( 1.0 分) (组内5/6) 切至整卷模式 搜藏此题  
  A light-year is the distance light travels in one year (at speed yrrk9hh,)(sqg-wsut m,i1 o:= $2.998 \times 10^8 \; m$).
(a) How many meters are there in 1.00 light-year?    $\times 10^{15}$
(b) An astronomical unit (AU) is the average distance from the Sun to Earth, $1.50 \times 10^8 \; km$. How many AU are there in 1.00 light-year?   $\times 10^{4}$

参考答案:    

标记此题
76#
 
填空题 ( 1.0 分) (组内6/6) 切至整卷模式 搜藏此题  
  When doing a physical experiment, Peter measure 40o2j+sgijh e ,r4ycos the mass of an object ten times2,echg4+0oj4sroj i y . All of the measurements lie between $67.4 \mathrm{~g}$ and $68.6 \mathrm{~g}$. What should him quote as the absolute uncertainty in the mass? $\pm$  (数值)  $g$ (Only put numerical value in the blank without any units or signs)

参考答案:    

总分:76分 及格:45.6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 76 道题
本平台(https://autoconfig.5edu.win/)支持练习,作业与考试(自动评分)三种模式,群组成绩统计排序导出,题目动态变量实现同卷千人千题。
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

浏览记录|手机版试卷|使用帮助|手机版|无忧得胜-网上国际课程 (https://5edu.win)

GMT+8, 2026-10-12 07:36 , Processed in 0.957748 second(s), 185 queries , Redis On.