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习题练习:Physics Unit1: Introduction Measurement & Estimating



 作者: physics   总分: 75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 ymoqygm 09fhtda,7fv /tz,x 8yk+(o:a different scale. They record their resultsyqmx ytdtz v7/yo,9 h ,8ff0akm (:g+o 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 mass of an object, each using a different scale. Thesse5bgh v3gu:r4 j+c;y record their results as fo34chgrusv+e; s5b :jgllows:
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 numbkxbq, c; ,/6ai5pczxf ers 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 sysj 5y.6c npm+zstem 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 ona o )-m/0qvullly 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 system h iy nm8mjc0ytb w)9z;*ave?

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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 v+q ulzyvz qmu1wf6pjlc 8f)(13 np05time 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 the fcgzk 5ie, ncnpu2p* ;n1-i5qfundamental 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 mr1dgi9.dgw/yg h b)sm3 .yxr -; :3kp/oejbjone-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 one oneg q i(okuh2;)2i htjh,4ikk9t-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 thob*m2uu vvkc1vrj ;rmo6 1m, o+m-sp4fusand 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 day .5ncnb1p/m pks using 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 between f3*l0twgnf2o3kstn;9 4orqk $km/h$ 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 factor betw otbboo73rh5s)q af8,een $km/h^2$ 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 betwe0 8jkultuojv;f b-34a en $cm^{2}$ 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 equa,; nr;yvl3gyy:7st eltion $x = A + Bt +Ct^2$, 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 measur3c be aj.2d v;gq)g)flement $2.58 \pm 0.15 cm$?

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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 percent 3 71 xc36tqr yu/6kwr*,wovbob fk1 cq:x5ja huncertainty for the measurement 5.2?

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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 fq) nbpo1d/xc/c:ow 8 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 its apoq, bgz f*29saq6g rx,proximate 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 signifiwt94loz;hisc w uj .87cant figures in 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 signific10aa3( y rqzbzant figures 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 significan.6hv 6 zxr4y1b nqejt*t figures 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 has three tx1xnd+ vmw i0e1(ene* h/c) vsignificant 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 betsxifoht a9 ,21,fz91j ack5 (+eedizzween 103.5 and 102.24?

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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 d,6zx7pqs y 4yzimension $12.56 \; cm$ 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 y*ia -b6wr v:zys+w l5p+b 7nsconsidering 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 of7jkhng0ef7 g5hfsq: ) $55 ^{\circ}$?

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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 av h i4rp2k1q 5izf):y0.606 m, respectively. Multiplying, yourhi ikzr):14f2qv ap 5y calculator 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, respectively. b jjj dq7-qrb c,o9nj;(84drk You calculate the rectangle's perimeter by adding these and multiplying by two. Your calculator's display reads3.462 To the correct numberrcjj-kq 74b(r8jbd d9 jno q;, 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 andklt9 5k kv)ts*sj4 13 gkv8fd4 yog0si 1.5 m wide. What 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 and 13.7 m wide. What is the leaq9iyv;t :qt7ngth of a diagonal from one corne9;t7q tv:y aqir of 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 valu m2fw81/e 8ldpcln8mie.

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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 power of ten notatib *(nfu:u:fuqon.

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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 expresql8m0udf 9 ixe3a4bus ug ;3.zsed 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 notatiy*npw fw 3nvbna9 g)49on 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 numbers/fpt: ma o,fzb *.3-e: rxjry $8.42 \times 10^{-5}$ 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 x59mqicnfn8 yg7 e3 /ihrt ,0g$(0.410 + 0.021) \times (2.20 \times 103)$?

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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 standx+o*8i7b- vo kzakfpm.no 6/card 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 wh*tzb)d 7/ qtxoich 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 millig 9 ehkw nl+.u2);hiivxrams?

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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 kilometerss dx j*09c8xyi?

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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,e+rtjbg ox0ey/t(:y equivalent 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 xc7 z))6webjqtall, 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 ris(vya7x-h1br +ebjcelgp,jst 4ui3ra.g 0( l3 es to an altitude of 600 fathoms. What is this height, in feet? ((i l1 esj43j,aap bulxr gh+y-r0ect 3vgb. (7$1 \; fathom = 6 \; ft$)

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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 l xo4bs4+gl:/eg, nbw70 years. Assume one numerical figure, write this in power of ,weog/s lb:xlgbn+44 ten in seconds.

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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 electrwcpf66*cx l7 z;cpz*.dx 6k rwon 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 dap7 ks 7t/ -pz2m.iqxxh(8v4 o: hoyu 27kqzmzdsh 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 are)evyf)6a9 bcea?

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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 signifjja/ 6tomz* +b0lh3, btd9eja icant 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:.stp(lgr(f z- rm ,1/j s(wsgsp(lprd4x :sm long and 50 yd wide. What is the area of the football fg( p wglrl(.ss/p(mp:t zs(rs1ms-d : r4fx, jield, in $m^{2}$, 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 they;p8 yc n:qbud og ko 1 )by090ksw*yyzq/y0j: 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 length 20.0 cm has a(3i/eettyv.j lo fv q87 gpmvue;; x/.)mek.en inside diameter of 2.00 cm and an outside diameter of 2.40 cm. What is the ;y8ktx ;v/eee7j(qoei 3)gtfvm/u epm. v..l total surface area of the pipe, counting the ends, in $m^{2}$?

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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 tf. :0pr1 5opvwlhsc6 surface area of the Earth in squ:5.potpc f hlv06w 1srare 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 b y(h.r6ik ,r 5jp*ik p+ad*tbvlood is $1.06 \times 103 \; kg/m^{3}$. 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 t uayb9p*jp.+dxwnpqe u(u0 s13xa0 l xsij5 76he mass, in kilograms, of one cubic yard opi0d60jw(y197 lb5ax ae xxuus*3+ usp. p jnqf 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.)

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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 k,t3 , ixd:0hm/ndh ps9pa t:sheart rate of 70 beats per minute. If someone's heart beats at that average rate over a 70-yr lifetime, how many m0p3 ,xht9 :h ,:sadds/tkpintimes 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 bus kbeb;hw.),mu es. If each school bus is used 3 hours each day, the average speed of the school buses is 15 mi/h, and t ew,u);.bmhbk he 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?

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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. n/qn*hurv*5jpy4l 2q With a protractor at eye level, he finds that u5l2pj/y nnrvq* 4 h*qthe 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.)

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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 east to city B, the1oyk : (70 n7p:xetegq(e.f7 hl ukisen 300 miles north to city C, and finally 700 miles west to city D. What is the distance between0.t:nlx ge : ke1usoik(( hqpf77e 7ey 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. The book )7*6kkrzu xs85feu pkis 3.00 cm thick. What is the average thickness ozp785e uks6)kxku *r ff a sheet of paper 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 usually sold curled up in cylindrical cardboard tfyd .2dvn b 13ocwo1ix6p:s.zubes. If the length of the tube is 84.5 cm, and the diameter fypn 236i..1d ovwb1sdxczo : of the tube 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1/5) 切至整卷模式 搜藏此题  
第 2 题组 (共 5 题 5 分)
  How many significant fighwh p+g,lz w/, br5.qzures do each of the 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2/5) 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3/5) 切至整卷模式 搜藏此题  
  Express the following sum wit5 zwn )r*1p*w. *hlkr4vk av.irosar)h 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4/5) 切至整卷模式 搜藏此题  
  Determine the conversion factor beg fo*u-w kn2a2tween
(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5/5) 切至整卷模式 搜藏此题  
  A light-year is the distance light travels in one ye os);tak(1 l4 ( oixji8trex+xar (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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