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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 objecr 9c g8+-8tnn5xmmgcnt, each using a different scale. They record their results ar+ 8mcg mn8x 9n5n-gcts 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 uq +1;aix w4infr .o.vtg,) qkusing a different scale. They record u ;rv ,afgq1i)k.ox4i.q+ nwttheir 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 smc bg;60g d0 9rr b+/9eonuikzzall 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 basrsb5ez0 3tm8te units of 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 o 22 1mazgb(v /ldq/ 8hjsu/vnunits.

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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 S6fwf- :f- ekf:ppcm:xltn7l 3I 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 tj2(ddlpei zbur3x) (:ime 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, what4dg 9jj:x; +ztzrr4(iwp0uqmctyy :0 are the 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 fogq6y9pf ;l a(uac- i4wr one 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-hundredth7:m;tip8m m5fk:yex hp:0i18jndu j s 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 tf j2kog7 c2q9ahousand 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 0hl8qgfn;:scy9 i: g d:.02 days 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 7ajgj y8)vh2f6u4kqgfactor 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 factoru2*;,72w ugo- o stn viuzi(zu/ xl3dh 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 be*- -whf8q(/be9 amo )5prfauux xik2wtween $cm^{2}$ 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 equation w+b.u(n*u5kxq /rf);pa b7z zw w+hmy $x = A + Bt +Ct^2$, 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 thmnz +xrtj14 ;ue 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, iuh 2l8)m92 uwgdusy-aqe e5s0mk1l j.s the percent uncertainty 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 wgm xwhfb6x2o yz-0 w669ufefjm/f 7-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 its approximatetd a+rvxs:h7)o) j/du 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 in o-4( -tm r rbi9gf(mim10001 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 in 0.0150gm-zb*p9y ni7wxj l, 20 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 fh8hm jr g 62i),hx*m0*ownepmigures 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 4il1ku0 3ep vfyj )moyq+ /lf9;eai9n has 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 betpt2nz( n,:vm c*vlv u)yd6nj:ween 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 dim*/wwi bg 7sgg1wem(8r tf 1*auension $12.56 \; cm$ 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 considerinlo 8,h rl7ge*vg 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 of y4lokw)i*3ebn35au d )ek 9o cca7v, s$55 ^{\circ}$?

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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 rectangleh lc ql j.7pzdm.j,2;e are 1.125 m and 0.606 m, respectively. Multiplying, your calculator gives the product as 0.68175. Rounding properly to the correct number of signip,c zqh .ed;2 l7jj.lmficant 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 ok a;,pwsx mlto7r567f zu+.lf f a rectangle are 1.125 m and 0.606 m, respectively. You calculate the rectangle's perimeter by adding these and multiplyil6577 oakr lp u+ wmf.t;,xzsfng by two. Your calculator'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 wi-s6yrt-iekhp *u9j* rp1x.amde. 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 zyf0bcn54 .u2hvc+gn2pcs7,qxcm r 4 m long and 13.7 m wide. What is the length of a diagonal frcu7,nhmr2 sccqfb4y5g0.n+2 4zxp cvom one corner 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 va-n w vur;ulspa9clwy *,0: qj;lue.

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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 powo ndc5ew6c u)-+3 fadwer 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 expressed ajj -gn-. b2 vspa;8vy /mzkwqhw++u /cs

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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 fw8 ) mk7b3bk .ai6lm+bb+lbeas

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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 0: dso- wn00mc nu ut8w mue8r.enm3;e$8.42 \times 10^{-5}$ 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 ohwil)f e zo-1(f $(0.410 + 0.021) \times (2.20 \times 103)$?

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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 stangly b:eozu(. 6dard 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 p l lb;(z.) sde**dyqethe 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 milligrap3r r+ +cfdpxwypi*3i74 f1qpms?

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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?g/s .(meh-i7j (b awnn

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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/b+e/8y3s1vmphx wc(ej ; znl(xg dw+ 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 incs ofm;abh4* r)ea4;xu hes tall, 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 ani )cxq)la d2:m altitude of 600 fathoms. What is this height, in :)xaq2i mc) ldfeet? ($1 \; fathom = 6 \; ft$)

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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 aneab mcm,/* c8bimal is 70 years. Assume one numerical figure, write this in powerm,b*/ma c c8eb of 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 electron iskdc-w(ni(yb -6vxi 2 k $9.1 \times 10^{-31} \; kg$. 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 (7ik 9:2kkjybx7o gxaa 100 m dash 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 av.tjf6q sj d( +uy9k-area?

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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 significant figur4i gi+)tol m:res: $1.00 \; kg + 1531 \; g + 2.54 \times 10^{4} \; mg$.

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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. What is the a)pvl05kuu rr rmn)u4j s4 l0o4rea of the football field, i vlk4usur0mno lrup 04 )45jr)n $m^{2}$, 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 tfu*6objl3( ln he 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 hac +a retsb/20js an inside diameter of 2.00 cm and an outside diameter of 2.40 cm. What isb +0cerj sat/2 the 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. Wha+,0s a/i j u/gytqu e4(krh.njt is the surface area of the Earth in square ekq tig0ah r .+y/(4/njuujs,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 bloj vq n(10xtu/j8w-dkxod 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 the mass, in k7(av (pn5:6dq ydaiy jilograms, of one cubic yard of cpa6 i7v( aqdj:yny5(doncrete 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 heart rate of 70 beats per minute. If someone's:;q5 mjd/0 zwzd-mjzz heart beats at that average rate over a 70-yr lifetime, how many times would it beatzzjz5qm:zd0 ;/ j- wdm?

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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 school1hnn-s)-uu6 egtp o65x6izy s 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 6 h66)tu xisop-15u z -eyngnsis 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. With a protractor at eye level, d4 c3uckywv *y54z.wy fhxz.yl7,r p/he finds that the angle at the top of the ffz/ y vcc4x.z*pyu r3lw5 dw47, yyhk.lag 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 e fb 7w5 juitm,9v7pz2city B, then 300 miles north to city C, and finall 7f 9iu t,mb5v7ep2zwjy 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. The book is 3.00 c,zu 1v27nkm kf2 m) (,0tcybjsu gr.xrm thick. What is the average thickness of a sheet of paper in the book, in centimeter fcnr2 j.)b7um(su,mr 1 2 0kyzvxktg,s?

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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 soldotr h3o7s39i,hd;k l9ji0hm wd9ko 1v curled up in cylindrical cardboard tubes. If the length of the tube is 84.5 cm, and the dikolhsd93k0v i7o, h9i9tw;1 jr3dhmoameter 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 figures do each of the follozi)z+jgoufl 5 txk,,-ywyn58 wing 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 with the correct number of sig k,n):, p2flbwdkmm.n34o,li.cii ks nificant 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 b*9 jb7 ei6rcy39ceaoz ;k. adoetween
(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 year (at speedf8-ny jxf 74sw = $2.998 \times 10^8 \; m$).
(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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