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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: 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, each using anh0 2ri9+6rp zk-bxrn different scale. They record their r2-9 bz60 ixrr+ hnnpkresults 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 obj*5e7q 5h-j koj3jp mciect, each using a different scale. They record their results chji * op je37m55j-qkas 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 largrj) f4vtt*/jx; 8l -y lo:oxfje 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 o4 y/6 ek*cuhzsf the SI system 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;,t/n t5ttsyb 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 hal*erqs1/ yzu (y4z,w qve?

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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 timxrjm;qdym142ge ) ( rne 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 fundamental c*whu5grpk// 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 on2p3l jn b88c486+pmq8t8zgvcya yjov e one-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 one-hundredthr og/ wr4mp/sc;vg* pxm 6 e+g,;dk2gt 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 ox 1hmfw,q+5ml1mr0ba )-rt pene 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 using a p -td m*7ok nem93dnrm cow/o9o3t 97dlrefix.

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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 conversio1o yn*zb(: bie*wj1 w oa6lne.n factor between $km/h$ 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 betw4;burd,mtebwik m 50;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 f */fet ; kqfnrhd4k7-qactor 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 objecgcsy4 (gyas ,.t is 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 uovmy4ylh8n7 * ncertainty 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 percent uncertainj*9y h) a,lz9upzm sw*ty 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 area of a aw v)t:vsad w(g2:x7q 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 uncertainty, of a sphered;5 ziki-ikxks;;ez 5 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 fv 22kk. v0)x.smghflmgw2 pboyc, 9. 7fn yqi6igures 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 significant figur u.z21zzy( afres 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 figur ncltcn1)1s)3vf4r cmes 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 t m+ze xjkd8 *r/4u0hlwhree 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 between 103.5 and 102.24j;q2t hrgq(,c r)d0c f?

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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 wx:t z7bzu)c( v-vr-oaith 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 divided by 4.561 considering significant figl/n jwh0.6xhqc4t h vdjx ,k4.ures?

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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 ofr4v;b2u ra w9/ ymm2kd $55 ^{\circ}$?

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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 rectanglel*3b73 ydvgb k are 1.125 m and 0.606 m, respectively. Multiplying, your calculator gives the product as 0.68175. Rbv3 gy b3*d7klounding 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 0.606hfojyz0v -v23l.h:b c m, respectively. You calculate the rectangle's perimeter by adding these and multiplying by two. Your calculator's display reads3.462 h-zvob2flc. jhv 03 :y 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 isy4obtux q;8mqp 2)hgm/1x mx * 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 lenbj7mt/ 2xf8hhgth of a diagonal from one corjft h8/2bmh7 xner 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 val, h 1mgl(hf;5m fnrqb-ue.

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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 powwhplawyf;k ,3 e.yy5 :er 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 expreb3dio.d,.k 8rv dufl 9ssed 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 expre 6y2-z/m zur+0psltibssed in scientific notation 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 numberv*xd :1nmk2bl $8.42 \times 10^{-5}$ 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 ecdk(nel2z/7,j; oq v$(0.410 + 0.021) \times (2.20 \times 103)$?

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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/* g, n54dnn nst8uhhj/kym0u 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 which of the followihm4 l7tcg o+( rrzk69kkq1t.m ng?

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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 4(tz: ztfkep3q5)/ dxs(nf txlligrams?

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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 k kyzik -7:tzsp,-(ugpilometers?

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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 follo77cty:djvt5 gm q3++yi z1 ynhwing is not 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 tall, what iseb(sj:n hs ,b:5seej3hi7d-i 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 an altitude of 600 fathoms. What is th /qbaj b1w 38t0kllaslcl12 .cnb *kp*is height, in feet? alnlqb/2 a t klk3jc0pb8s bwl. *c1*1 ($1 \; fathom = 6 \; ft$)

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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 one numerical figure, writ u5otud6pmfrr3 kgd04( af2l7e this in power o6fadufo 3kd p7(5trr 2 l40mugf 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 electronzxbdj8y-6 o ;u 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 5zdrz) + ebiq5than 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 ar r jryp7.rxb1/ea?

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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 correctb276j+ 9do cvz1tpmza number of significant 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 loz 1d5lt8yyd8 00cmexz ,ueg -;elz5w vng and 50 yd wide. What is the area of the football field8 d8u 1yw5x-eeyzcg z tlv dz;0ml,e05, 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 the volum ks8bny )/(h3zk *s+,jjawoxze 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:mm:2b8p jj2fetpu,j an inside diameter of 2.00 cm and an outside diameter of 2.40 cm. What is the total surface area of the pju,:: jfp2e2mt bm 8pjipe, 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 surface area l ddx- . a4)5.fvxy.l,1f9gjjo sdebiof the Earth in square meter.bjigdf5od-.)xy fa j. 94s,xed1vl ls?
($1 \; mi = 1609 \; m$)

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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 c bw l1(+ rpnk+84zhx 34yyaviof blood 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 y:,em u kjm vd781+kg1fuu c9sie1z, dvard. What is the mass, in kilograms, of one cubic yard of concrete tdscm,meuz8i vg1fd ,:u7 k1ke+ vu 19jhat 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 heart rate of 70 beats per minute. If someonb 3c0. zb.r4hw0 xz.eljh n5eoe's heart beats at that alw z..zhex00bc oh5 4nj.rb3 everage rate over 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. If each school bus is used lx4b(8o zpl ;1rt675 h e td6s*okuahs3 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 cospb6ozht adx 7l o *4hlr85;(1ekt 6ssut 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 at eye leve53f5h3xniq9ha*p( shv wl s gte8c.v8l, he finds that the p vi3vsl* n ghs5tcw5ae8(xh9h3q8f.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, then 300 bcbihz f3 rz3f.gxdm;.),)g( up n)tomiles north to city C, and finally 700 miles west to city D. What is the)ifxoz chu(t nfmbp);br g3 )..dgz,3 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 76muz3p njh9))lnc /0tjkxnit68 d. 4 er4. The book is 3.00 cm thick. What is the average thickness of a sheet of paper in dei t.x)m3 /rlpn)t 9ck0jh6 un4j n8zthe 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 tube6rp sbcu+calnxj b)ce4 v6m1l i+i8up:.dy:(s. 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 poster, iy:68px)ue l .vund:1l m+6b4c(riaji +b cspc n $cm^{2}$? (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 figures do each of the following numbers have: (a) 2.vf;js0(.ed hn ce kqq* n+fb114   , (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 with the correct nu p2r b..;j*skbzl/na rmber 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 mbo8vqbgh :br:dyz0ct +f 0 1: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) $1km/h$ =    $m/s$

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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 dist 78bt 6;zfherm+8:muv5nvpcb ance light 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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