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 Unit1: Introduction Measurement & Estimating
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 55 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/test55.html
 作者: admin    总分: 76分  得分: _____________

答题人: 匿名未登录  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 object, each using a different scal:bmv w vm d28l)).;p z5zezfe gqt)ui0e. They record their results as fo5qf2ue)v zm:8g i z0vz.em;p dlt w)b)llows:
Which student used the least precise scale?
Student Mass (g)
A 49.06
B 49
C 50
D 49.2


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
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 different scale. Tuxtb+ yt y)tk4fe/; b*hey record their results as foe xb ;u/+tft4by*)yt kllows:
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 expressing ve8wqcq 6sva 3b9hx gw8f5:zj*2ny8cafgb 3ry8ry 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 arjkun nkj.c0o22; gh ew2p-p pu, 4o,dye base units of 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 SI basicui,ei2 nrys7qe d3-xc :c))vf 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 dg abr)0uo.*9cwy b* ijoes the SI 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 wgh1j lu,9c- ytime 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 fundamental unih 5(6)evws 7c jiyd(lhts?

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) (组内9/70) 切至整卷模式 搜藏此题  
  The metric prefix for one one-th fmd147mu ivp(ousandth 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 for one one-+3 eoxy* wqpsza +ed2g3m*3k uhundredth 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 t2r x8ls /j5 ii2ccv*q2u4d:i *+mtl(jfczz exhousand 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 0.02 days using a pre0kevb ., .xcqxfix.

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 bet - i l:9td(ue.6l(/ ka;asfufwh(mt alj:ex3zween $km/h$ 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 betwe n5kqd;(bq*s ben $km/h^2$ 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 betw ;asiz)jxj(;l een $cm^{2}$ and $m^{2}$?

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
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 a- -oovl) (kpiin object 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 uncertads x-wxj /9;acss8 y.zinty in the 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 unceeq/;:7xxijf6mqjfhifkf /8; q07y uartainty for the measurement 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 uncertainty in the p2(6dzjy yq 4+ wb 4u;zdp6r os8hsu2 ycj42afarea 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 appoe;:cm d,9fwyroximate uncertainty, 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 signifm/vk ukql 377ec+u 8unicant figures in 10001 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 figures in 04+31ju7+agv bjgj s za.01500 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
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 l1j) bv:3nvyt u cc 1sj+e. ahiuw5-yi;bu +/afigures 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 three significant figures?gm zh -yo2h-.v.l 45s liuavc6

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 103.5 Volts and 102.24 Volts a0.ffv e :inwc, 2:ffkif they respectively represent two measurment values of Voltage., iv02afkewn:fffc: ?

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 rectangle with dimen+ts */ci:yr km2o/rk hsion $12.56 \; cm$ 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 d hsjdsry q,)/4ivided by 4.561 considering significant 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 of hbjph.ed 6 jk2uud):7 $55 ^{\circ}$?

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
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, , o6mznf r6h .u,g af5gqx:1qmrespectively. Multiplying, your calculator gives the product as 0.68175. Roundin,n1uog6. 6mgm,fza:f5hrx q q g properly to the 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 1.125 m and 0.606 m, resi0zvo 89/k (ujy(uwyjpectively. You calculate the rectangle's perimeter by adding these and multiplying by uo(ujwki j(/09zvy8 y two. Your calculator's display reads3.462 To the correct number of significant figures, 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 1.58o o7u z4d- 1zovoa;la m wide. What is its area?

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
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 thedn8/l a;c p*mv length of a diagonal dclp8/m;van *from one corner of the garden 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 *e4s1qab oq .gvalue.

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)age;uii 2c 3g scientific notation (power of ten notation)

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 exp(oyqps0uttz o1y0 0w1ressed 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 in scientificsz,z 2jy bdr,* ,ha2yg 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 number smk7muse9(ewl mz -,grc.z/5 $8.42 \times 10^{-5}$ 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 o un8i iyi;c4r3f $(0.410 + 0.021) \times (2.20 \times 103)$?

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 gig5 octc) aabv1f8cn* a6/4d qjrameters as full (decimal) numbers with standard 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 to which of the fo 2 qfgpb6o*)ct 2m,vihllowing?

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) (组内43/70) 切至整卷模式 搜藏此题  
  How many grams is forty migx- k64 u8gew7xxz moh.z, u8slligrams?

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 kr1)a, 1(w zc fm2ojixnilometers?

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 d gxkckqf+1dpm3q352 not equivalent to 2.50 miles? ($1 \; mi = \; 1.609 \; km = 5280 \; ft$, $1 \; ft = 12 \; in$)

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 height in metersv9*fq 42izyp 3 rnwh,v? ($1 \; in = 2.54 \; cm$)

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 fathoms. What is this height, in 34 7dfn jqejn,8*wy ywfeet? (w,d84 yew y7nj 3jqf*n$1 \; fathom = 6 \; ft$)

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 anim tiy67pobbzf3l )+j 5lfy jx,*al is 70 years. Assume one numerical figure, write this in power of ten in sexob5 y yj)lt3iflfp*z 76,bj+conds.

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 electronf x ,mu7f+o6yr 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 m4*6k3 iydltsz/:gsw6u(g9ipfd h(c o dash than a 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 ;xizpb -/* ,nzo7nngaarea?

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) (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 thy ni;y)+x)d1j4twvs oe correct number of significant 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 long and 50 yd wide. What is thegs146pmy);1 j iip7rtwb h5ewsys8l1e +5y cl area of the football fij1esb 4;h5r ywm 5 y)7y1pi +psc1tgswl8l6ieeld, in $m^{2}$, if $1 \; yd = 91.44 \; cm$?

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) (组内59/70) 切至整卷模式 搜藏此题  
  A ball has a radius of2kgu2vcr9;jaswf) -sg9 n z1 i 3.23 cm. What is the volume 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 diameter of 2.08qo)wzac 7mxwsu2h9b ;,m6-fbqudl.0 cm and an outside diameter of 2.40 cm. What is the total surface area of the2 q,)fb-7lwu.b6xhq89m cda sumo ;zw 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 is the surface areahwlr0: 8 .mjm8k,ppdf of the Earth in squ: lf krj.wp,8pmh0md8 are meters?
($1 \; mi = 1609 \; m$)

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 blwa)*i -;rov .jf n6ulvood 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:    
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) (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 kilogr :fjxoy.h+/c cams, of one cubic yachf/c+yxj .o: rd of concrete that is five times 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 bea7.y . u(jff6zl69.ldwkd2xmz il,esb ts per minute. If someone's heart beats at that average rate over a 70-yr lifetime, how many times would w6d72(jk69.xflifzzbyels dl.m ,u.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 buses. If each school jry5zty5o, h) bus is used 3 hours each day, the average speed of the sch yt z)hr5oj,y5ool 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 if 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 fl2r3 (brlyn 1i q75lah4 fn6jpiag pole. With a protractor at eye level, he finds that the angle at the top of the flag pole makes with the horizontal is 25.0 degrees. How high is the flag pole? (The distance from his feet to his eyes is 1.7 ml3l ria 154 6qip( nh7nfjryb2.)

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 miles east to city B, then 300 m,s2c+- vl3wiv0th nqhiles north to city C, and finally 700 miles west to city D. What is the distance between city A and cit s0tinh3 qwlv2v,c h+-y 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 numbered 764.(each sh+lf )an,n/vw dueml1ug 3(sf8hi6 y+feet is double-sided) The book is 3.00 cm thick. What is the average thickness of a3/mayw dn 8il6e, v n+ug1u+h(lf)ffs 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 cardbo0el iq)*i lh(w9z j0ptt dxml8f* r:o3ard tubes. If the length of the tube is 84.5 cm, and the diameter of the tube is 2.40 cm, what is the area of the p j3*9tdrhm8qe ow 0*i)l: lltfz0xpi(oster, 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: (aaoi;y2 kkzel 7b)p, *t) 214   , (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:    
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#
 
填空题 ( 1.0 分) (组内3/6) 切至整卷模式 搜藏此题  
  Express the following sum ysz -ix 5q3m ;xryty*,with the correct number of significant 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 conversion o:e6 xk)r:ilzu-rhy5 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 trave7s1hcq y.)(wm-v9v ;*5 zd rfltz dgzwls in one year (at speed = $2.998 \times 10^8 \; m$).
(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 measures thu9w g8vl+rsy*xiv7 a/e mass of an object ten times. All of the measuremy8r ivs9*vg+7u/x alwents lie between $26.5 \mathrm{~g}$ and $27.5 \mathrm{~g}$. 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:    
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
  • 答题人:
    •
    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, 2024-10-5 04:32 , Processed in 0.400764 second(s), 176 queries , Redis On.