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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

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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, eachw::x y8x,gbq :of7) sft9 amkw using a different scale. They record their resulq)m:oabfk w :fsx7xy9t ,w:g8ts as follows:
Which student used the least precise scale?
Student Mass (g)
A 49.06
B 49
C 50
D 49.2


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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 mas xs5zo:b8q)fs1; 7njh2 eofo+ yyauf (s of an object, each using a different scale. They recor 7ff5fs1(+hooq os b)nezau;x y 82jy:d their results as follows:
Which student used the most precise scale?
Student Mass (g)
A 49.06
B 49
C 50
D 49.2


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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 very small or very large numbertyyy *6eqw;h8qa /gr,6rcgm0 s is

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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 of the SI sys kt 4ni)x;e-d .rqabt.tem except:

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5#
 
单选题 ( 1.0 分) (组内5/70) 切至整卷模式 搜藏此题  
  Select the list whicn,awf 0ctf9n* tpdk0-csh; ,/zmrw8th contains only SI basic units.

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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 SI syste;hx8k; *z:n6etj adys m have?

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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 ti9 gm;47u 3k3zgftht dd mv42p/x po5hbme is

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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 eci c* m*p43l8ocf/eathe fundamental units?

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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 on,300iteutaa; xeu kifhh q9 1/w.0mahe-thousandth is

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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 q om)w3d2 gs*m*e i2vgws+ 3xlone one-hundredth is

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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 thousand iswg k 5*h(nyq,e

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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 ucg8wpftv: zpb3pe 62*sing a prefix.

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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 betwee f6*ucum ktf9v l4l:0tn $km/h$ and $m/s$?

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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 fad1jvs:d50c ;kj e owt.ctor between $km/h^2$ and $m/s^2$?

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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 1sc28v sb(rne d/h yh k,*ocvwp.2n-mfactor between $cm^{2}$ and $m^{2}$?

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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 object is given by the equat+zywyd8gz3lj xu p/ *-ion $x = A + Bt +Ct^2$, where $t$ refers to time. What are the dimensions of A, B, and C?

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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 the measurement yhp g1 :u ufjmbjy9+q,kkr3 +5$2.58 \pm 0.15 cm$?

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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 pe a;uhhcp pl12tai49i1ln+0 lercent uncertainty for the measurement 5.2 mA?

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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 area o zxxext u/4g6z. xk8)vf a circle whose radius is $1.8 \times 10^{4} \; cm$?

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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 uncer 7pzbrahoc. v)1d;/ vrtainty, of a sphere of radius $1.96 \pm 0.01 \; m$?

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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 w+ epqm 5pf 5v3+5xzwfmfzlf7 -xv39c10001 is

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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 24xt8en t(vxh/ ykw o)in 0.01500 is

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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 rd4*/u c 9pttv6ykb we) ;s6wxfigures in 0.040 is

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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 hj - cc,od-jsl4f97dieas three significant figures?

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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?

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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 Voltsblp5:cq)a) zz and 102.24 Volts if they respectively represent two measurmentcb5z :)l pqza) values of Voltage?

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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 dimew7( 2a fcp3jgeg ya4md ;)jcl-nsion $12.56 \; cm$ and $2.12 \; cm$?

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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 significant figures?n:d6fn3h.h e6/vlkqx

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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 y:17l 32o xhaxcv1kwby,9axp $55 ^{\circ}$?

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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, resper:a4mz6yrag6b-m b9g*iwg b( ctively. Multiplying, your calculator gives the product as 0.68175. Rounding properly to the correct number of significant figures, the ar9bw(b grag i*g-myr :46bm6azea should be written as

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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, respectively. )we+ 8dpktlo7 eci(y . You calculate the rectangle's perimeter by adding these and multiplying by two. Your calculator's display reads3.w8).ct+p( 7lyei odek462 To the correct number of significant figures, this should be written as

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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. Whtt;1 nwfocj0za: h*huueo;-1 at is its area?

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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 an5-gol+)ap ksq +ratids:6m ed8 7 ewxc9en5 7qd 13.7 m wide. What is the length of a diagonal from one corner o+ -xo t 6eacaginl9qwsm8+er7qdkd:s)5p7e5 f the garden to the other?

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34#
 
单选题 ( 1.0 分) (组内34/70) 切至整卷模式 搜藏此题  
  Select the smallest valu1,85nj eblc mve.

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35#
 
单选题 ( 1.0 分) (组内35/70) 切至整卷模式 搜藏此题  
  Write the number 0.0( )tf*smwgig*0045 in scientific notation (power of ten notation)

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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 expressedl545 xcblx7 n t4z:isg as

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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 scientific notation asywc bfo r+yk*,)) the9

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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.

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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 fe;r /n*,pevf z: y-vd8 sp2u*)wsdfd$8.42 \times 10^{-5}$ in full with a decimal point and correct number of zeros.

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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 ofa kgsn)wq uov2 :10,24zbuvyj $(0.410 + 0.021) \times (2.20 \times 103)$?

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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 standard uni;mmrm*f m.+c drtqw-1wbfl1a. gq u: 5ts.

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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 whit2(-3-+dm cyrb2vc+bkyos jp)e iy:z ch of the following?

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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 milligrauwy*qux1p n7)j(cqc 8ms?

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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 sixtsp eg2p 339nuyy kilometers?

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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?

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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

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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 equivale-3eyem :,nsgsgbyuh s+n 8s*/nt to 2.50 miles? ($1 \; mi = \; 1.609 \; km = 5280 \; ft$, $1 \; ft = 12 \; in$)

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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 meter,;a zhks w.thi6m2k44zd8epc s? ($1 \; in = 2.54 \; cm$)

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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?

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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 risc+aha vw w;3i, dqas 1e*v)bj0s7s5ad es to an altitude of 600 fathoms. What is this height, in feet? (*3)ava1dciaws a sj h5wq, s;e+vb7d0$1 \; fathom = 6 \; ft$)

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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 onf(bd u aj.ekha+o 3.a lglq8-2e numerical figure, write this in power of ten in secoh(kj3q2+ 8-. aalbul. gaodf ends.

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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 electron isds( qk-ncx00cue(kg( svr+2no; ys(h $9.1 \times 10^{-31} \; kg$. How many electrons will make a mass of 1.0 kg?

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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? ($1 \; mi = 1609 \; m$)

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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 da3(dpc;z v)cx q 6f2eafsh than a 100 yd dash? ($1 \; yd = 0.9146 \; m$)

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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 mv 7oe.ge +/sbarea?

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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?

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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 signific p6n *jvti+(iteaa7)jant figures: $1.00 \; kg + 1531 \; g + 2.54 \times 10^{4} \; mg$.

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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 ydm dm 5ihzt0 rs n.st5g.k:(n-u wide. What is the area of the football field, in5-d.htzs:g (n0.s ik nrum5mt $m^{2}$, if $1 \; yd = 91.44 \; cm$?

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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 w4no oym5b*d( is the volume of the ball in $m^{3}$?

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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 gqvb ,0 w2hp//p1yk6p1hujauwe)gah9 5s -yolength 20.0 cm has an inside diameter of 2.00 cm and an outside diameter of 2.40 cm. What is the total surface area of the pipe)69y /,2ppbq g01hh who5g kyupsw1ajaev/-u , counting the ends, in $cm^{2}$?

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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 urpi9xx 9p0*b:6np kz3963 mi. What is the surface area of the Earth in square met9pk0 u p6ibprxnz9:x*ers?
($1 \; mi = 1609 \; m$)

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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 -4bj xty3r kct *letlurft:kq:.g-8 0blood 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? ($1 \; pt = 1/2 \; L$, $1 \; L = 1000 \; cm^{3}$.)

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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 $kg/m^{3}$?

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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 +76f a9 jfq k+gudqen4the mass, in kilograms, of one cubic yard of concrete that is five times as dense as wate+4deu9 jf6gafqk qn+7r? ($1 \; m = 1.094 \; yd$, and $1 \; m^{3}$ of water has a mass of 1,000 kg.)

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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'; ymngdau;8: is heart beats at that average rate o: am gdni;8uy;ver a 70-yr lifetime, how many times would it beat?

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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. 8d6 5 llvz3.qwlfgv9i 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 cos8l qdlv.gvlf5ziw39 6t to run these buses in 22 school days if gasoline costs $1.20 a gallon?

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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 +iujrhr)(oo0 qtr 1kp: b*3dr 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 distar0o ipouhkq(3tjr d*b )r:+r1nce from his feet to his eyes is 1.7 m.)

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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 mil4g0kpg--av o ges east to city B, then 300 miles north to c kog-g v-0gp4aity C, and finally 700 miles west to city D. What is the distance between city A and city D?

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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 sheet is dob k;n 0vw*73duaiehb w(.b;j:f jx7bluble-sided) The book is 3.00 cm thick. What is the average thickness of a sheet of papdn3 (b*;ukfil.vhab x7 j0e : b7w;jbwer in the book, in centimeters?

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70#
 
单选题 ( 1.0 分) (组内70/70) 切至整卷模式 搜藏此题  
  Wall posters are usuallylqtvpf q 4qk13v/z .u6 sold curled up in cylindrical cardboard tubes. If the length of the tube is 84.5 cm, and the diameter of the tub16 qvvpzq4ktlq3 fu./e is 2.40 cm, what is the area of the poster, in $cm^{2}$? (Assume the poster doesn't overlap itself.)

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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 t bbiq5w/z+qt8 he following numbers have: (a) 214   , (b) 81.60  , (c) 7.03  , (d) 0.03  , (e) 0.0086  , (f) 3236  , and (g) 8700  

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

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73#
 
填空题 ( 1.0 分) (组内3/6) 切至整卷模式 搜藏此题  
  Express the following sumqu,+r-6ju3t rwh(xvycvx1 :p with the correct number of significant figures: $1.80 \; m + 142.5 \; cm + 5.34 \times 10^5 \; \mu m$ =    $\times 10^2 \; m$

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74#
 
填空题 ( 1.0 分) (组内4/6) 切至整卷模式 搜藏此题  
  Determine the conversion factor betwui;dp ,;cmgdqqp sn/pc2h 611een
(a) $1km/day$ =    $mi/h$ given that $1 \; mile = 1609 \; m$
(b) $1m/s$ =    $ft/min$ given that $1 \; m = 3.28 \; feet$
(c) $1km/h$ =    $m/s$

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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)phef/5llp1e4 csc6 r travels 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?   $\times 10^{4}$

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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 experimlgaqz6nh- 3i. ent, Peter measures the mass of an object ten times. All of the measur6h.- zilna3g qements lie between $83.3 \mathrm{~g}$ and $84.7 \mathrm{~g}$. 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)

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