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习题练习：Physics Unit1: Introduction Measurement & Estimating
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 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

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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, each using a different scale. tg7 u: s,8ldej They record their results as follows: 8t,jsuelg7 :d
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 mass of an object, each using a differeyk ,x,wolb1 t52w:wqvnt scale. They record thkwbvw:,25o wlq 1,y txeir 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 expugh+ykz iaa*21ht14+s,qa o0e-vs spressing very small or very large numbers 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 systembxuop6l1 .ro 4*5wyex 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 which contains only SI basic unvq1b-0ye d(w md 39uuwv0 ,jig0tz1anits.

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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 d ag9qv9ev3,)oxgm fn .oes the SI system 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 time ism-m h( k:i qj3kg5izkg*l4 yt3p5mxg6

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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 the fun80 9s*lavk ,f9h,ri4zecnbml damental 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 one-thousanvs*:9i4q9dlmqp : fsb/nfx /ndth 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 fn7smpug 9 ,:sone 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 forv8db(acw3el ( one thousand is

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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 usiny.7 ,a6ye9bj q;b+y9o1 tb;io w(u vl zxkos8gg 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 betwegy, vx4/byt)exc(. ween $km/h$ 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 fact qx,q24z203unyj izlcpm72nl or 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 factor betfi/ + /yif. 6jw)1wlr2o of zctl6skl*ween $cm^{2}$ 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 istppill v82jiri67 0+s given by the equation $x = A + Bt +Ct^2$, 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 unconki+ m 5v0tdyqu+dxte859a, ertainty in the measurement $2.58 \pm 0.15 cm$?

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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 percenzbray 1)80lor t 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 u l *x:x0k1bvncncertainty in the area of 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 iqx8,w b2iib8qts approximate uncertainty, 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 ivf 7n *hdv 7h)k6ly qj5b5k8gyn 10001 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 figurfl nhsi go3219es 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 figures in 0.0d4ug s-/pzg . :(xzr0a+gvzpk40 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 has thre:z;m k q08ly d2mxe2n(lrdl)je 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 differenc9z y- :ktt6alze 103.5 Volts and 102.24 Volts if they respectively represent two measurment values of Voltat l6t-:9ayzkzge?

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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 witzrv azsg gv+l+zv83k3. nok;-h dimension $12.56 \; cm$ 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 divic dy/5rxut5/qp6.xyi* v-ee r .flq b(ded by 4.561 considering significant figures?

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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 ofo; -m:yhay6aj $55 ^{\circ}$?

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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 re54l9uv.+fokc ey7 ay nctangle are 1.125 m and 0.606 m, respectively. Multiplying, your calculatory4n9c7+yf.e klo5 uva gives the product as 0.68175. Rounding properly to the correct number of significant figures, the area 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,0 8i3 6u gj4eiawziv-. aao8ha respectively. You calculate the rectangle's perimeter by adding these and multiplying by two. Your ca.068hjeii- 48 aiouavagw za3lculator's display reads3.462 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. What is its )qm b-,mfwusa.e ep 0(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 and 13.7 m wide. .t )yaz ph.e/i What is the length of a diagonal from one corner of t/az the). .piyhe 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 value. 4x a(drj4-zhkturi1fll 2 /g.*y go4y

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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 0.00045 in scienv zy9gjr ;f-wd0t gu26tific 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 jn,( hcan-xr 8expressed 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 wp.fgif-n9uw,h2:7if fl.zz as

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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*.r a;m..bj m xe+rfoq $8.42 \times 10^{-5}$ 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 of 9*ar*qq3cot l-xsy b,$(0.410 + 0.021) \times (2.20 \times 103)$?

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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.:n*jnq t)k,rn 5 gigameters as full (decimal) numbers with standard units.

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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 whicz ur p 9;16)haxs j*m-lqmiuh7h 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 mi xsp4.)r 7(r teiuu:cklligrams?

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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 sixty kilometers*xu h.o2tm 0,te 4jcqz?

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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 equivalent to 2.50 mi2 mow*d(ke ppw+udoce ,41-o lles? ($1 \; mi = \; 1.609 \; km = 5280 \; ft$, $1 \; ft = 12 \; in$)

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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 taldb r7r5 21.s1fu9lwrtvvs4zhl, what is your height in meters? ($1 \; in = 2.54 \; cm$)

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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 rises to allhp iwr: 8,c-s 4mfi8n altitude of 600 fathoms. What is this height, in feet mhwlcrpl,ii-88: s4f? ($1 \; fathom = 6 \; ft$)

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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 anilj7) j6ok zzs)mal is 70 years. Assume one numerical figure, write this in power of ten in z) 6ljs 7zk)ojseconds.

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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 elect3z efyp e6spxs 4tmb)if 3*pd7 z31bx6ron is $9.1 \times 10^{-31} \; kg$. 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 dash than l-wfv i ut01g 3mvag82a 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 area ly; 7gom+:/hyyvf+ os?

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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 otp97 xxh) a91rvep,csignificant 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 yd wide. ;vca(wrg 8mu9z (7y :pfxnwv9 What is the area of the football field, in gvy x(c7mvpu9az89:rw w;fn($m^{2}$, 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 is the volume of the bgd3.u(,f ) r)rdtx/ s6 -loxlxgsqtb,all 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 l;wr4d n; bs4dapt6hnqsm0+ 9v. t (cosength 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, counti+ s ;49 6so trpavw chb(s4tm0nd;d.nqng 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 3963 mi. What is the surface area of the Earth in ai bd5q +*zul5:mh,qka9o8f1kg ul /jsquare ogqa,1 5jbh 9dq+ua/ *kiul58zm: lfk meters?
($1 \; mi = 1609 \; m$)

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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 bloodq -koc8-;zg xik;fh0 v mc/yp4k)uov; 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 the mass, in kilograms, of one )pmneg n32z;+bx8s em8hp 5qhcubic yard of concrete thagbm hh nx;38nm8ep5epq)2+zs t 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.)

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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 h 0e 5 z3euvt,wss/:zu5ari:p feart rate of 70 beats per minute. If someone's heart beats at that average rate over a 70-yr lifetime, how many times wo pf: uru/ wiese3za vt50:,sz5uld 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 cqg962qeo /hcqk-9q b has 300 school buses. 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 9-eqkh b2qq/gcq96co 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 at eye level, he aj; f0oi)yhauj9; slk-4f9vvf2(min 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 m.uh9 -)l9ajy2v( fkvaii4nof;mf j; s0)

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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 miles zb dr5(u7r f1veast to city B, then 300 miles nortr175rf vbz d(uh to city 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 boo w(:3;n y2u sv-poxijff vvv34k is numbered 764.(each sheet is double-sided) The book is 3.00 cm thick. What is the average thickness of a sheet of paper in the book, in cen32j3 4xu-fvvivfw;y vpos(: ntimeters?

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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 usually sold curled up :uhb i8 :9:d5iwt 9ini allyg)in cylindrical cardboard tubes. If the length of the tube is 84.5 cm, and the diameter of the t8:g9liiua bdn:lt5wi : hyi9) ube 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 the following numbe*m 5kgww t(tt-rs 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 sum with the correct number of significant figuric k6f0:7l q-3qayiwyes: $1.80 \; m + 142.5 \; cm + 5.34 \times 10^5 \; \mu m$ =    $\times 10^2 \; m$

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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 fjoydes3 v p66- 7fosfzqu9.juf6rw5yjo*y + 3actor 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) $1km/h$ =    $m/s$

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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 travels in one year (at spevs9dweoj 5/4 ved = $2.998 \times 10^8 \; m$).
(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 experiment, Peter measures the mass of an object p b)bbw74u s3c 8m7hkkten times. All of the measurements hk)cu73smbw4p 7bb k8 lie between $32.4 \mathrm{~g}$ and $33.6 \mathrm{~g}$. 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)

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