1、FD-NST-IA8V f “ N P f A8s0WM PA8 l V t zA8V Bf b“A8V a l A V f bV f i d A88 CC a %Cb b 5+ ( P Yvb 6 = HS 5 b 7V f T/ =V V w m 2 UyN 3V U 5 67l “db m 2 M M f b 2a h h“ 1 9 j b P b 3ajVF !9 TB1nT V Lb yN*N Tl zi 3g5. . ZEb =aN 1a -b 2a v P id? b 3aD % M 4 b c“Kl=EKl=E V ) BF VVBF pM WG 1“ f 1“ Tb Kl=E
2、 l# px yW L1“ H TL LM W n 11(, )x y 22(, )x y (, )nnx y 5US“ xoy V n(, )( 1,2,3, ,)iiiPxy i n=Lmo mpVm VY Atv L x yW BLf / pb I nLf yaxb=+ a b b T (1,2,3,)iPi n=L L V M W1“iiyaxb= + bB t V ?BL b: ()ii iyaxb = + Q L yaxb= + ,iix xy y= H9 y L=iy 3 b 1 p lzi V VyN? 9 10nii=Hf y ax b= + zQ M W1“yNH V ?v
3、b B J I n1|nii=91nii=b T yNB21nii= 9 y ZKl V vb 5B y ax b= + a b Pf 2211(,) ( )nniiiiiFab y ax b=KlbZE “ a bZEKl=Eb (,) (,)0Fab Fabab =11(,)2( )0(,)()0nii iiniiiFabxy ax baFabyaxbb= =N Z111221111()1nnnii i iiinniiiinniiiinxy x yanx xabyxnn= = ELM1“ Z2 12211()()niiinniiiixyrx y= L“ a . 2 b c B /V f “
4、 s 0tC 12 13 14 15 16 17 31(10 )Nm 73.7 73.6 73.4 73.3 73.1 73.0 0tC 18 19 20 21 22 23 31(10 )Nm 72.8 72.7 72.5 72.4 72.2 72.1 0tC 24 25 26 27 28 29 31(10 )Nm 71.9 71.8 71.6 71.5 71.3 71.2 c C Kl=E9 A8V f “ Maple restart: #Data n:=7: mat:=matrix(2,n,0.5,1,1.5,2,2.5,3,3.5,14.8,29.9,44.7,59.8,74.7,89.
5、7,105.0): dd:=matrix(2,6,34.68,34.66,34.68,34.70,34.70,34.68,33.02,33.04,33.04,33.06,33.04,33.02): u:=matrix(2,6,148.6,116.5,83.8,61.6,33.2,10.7,99.7,67.8,35.5,13.0,-13.7,-36.2): #Calculate B: xy:=0: x:=0: y:=0: x2:=0: y2:=0: g:=9.8011: for i from 1 to 7 do xy:=xy+mat1,i*mat2,i: x:=x+mat1,i: y:=y+ma
6、t2,i: x2:=x2+mat1,i2: y2:=y2+mat2,i2: od: a:=(n*xy-x*y)/(n*x2-x2): b:=y/n-a*x/n: B:=a/g; #Calculate D1 D2:=evd2; #Calculate /Delta U, F, and /alpha ufa:=matrix(3,6,0,0,0,0,0,0): for i from 1 to 6 do ufa1,i:=u1,i-u2,i: ufa2,i:=ufa1,i/B: ufa3,i:=ufa2,i/(3.1415926*(evd1+evd2)*10(-3): od: DuFalpha:=eval
7、m(ufa); := B 3.062338483:= D1 34.68333333:= D2 33.03666667DuFalpha := ,48.9 48.7 48.3 48.6 46.9 46.915.96818910 15.90287954 15.77226040 15.87022475 15.31509344,15.31509344 75.05659397 74.74961406 74.13565417 74.59612407 71.98679466,71.98679466 实验 4.1 拉脱法测液体表面张力系数 实验数据及其数据处理： 1硅压阻力敏传感器定标 砝码 M g 0.500
8、 1.000 1.500 2.000 2.500 3.000 3.500 电压 mVU / 14.8 29.9 44.7 59.8 74.7 89.7 105.0 斜率 kgVk /10.30322.30.100 2/8011.9 smg 大连， MgBU 力敏传感器灵敏度 NVgkB /071.38011.910.30 2金属环外、内直径的测量 次数 1 2 3 4 5 6 平均值 D1(mm) 34.92 34.92 34.94 34.96 34.90 34.90 34.923 D2(mm) 33.10 33.14 33.14 33.08 33.12 33.14 33.120 mmDDDi
9、iDA024.016)()(6121111 ， mmDB02.0)(1 ， 0.00 0.50 1.00 1.50 2.00 2.50 3.00 3.50 4.000102030405060708090100110120M/gU/mV(3.322,100.0)U M 关系图 221BADU mm03.002.0024.022 mmUDD03.092.3411 mmDDDiiDA025.016)()(6122222 ， mmDB02.0)(2 ， 222BADU mm03.002.0025.022 mmUDD03.012.3322 3竖直方向表面张力时电压和拉断后电压的测量 次数 1 2 3 4
10、 5 6 平均值U1(mV) -7.0 -7.1 -7.1 -7.2 -7.4 -7.5 U2(mV) -52.8 -52.9 -52.8 -52.9 -52.9 -53.0 U(mV) 45.8 45.8 45.7 45.7 45.5 45.5 45.68 mVUUUiiUA14.016)()(612 ， mVUB07.005.02)( ， 22BAUU mV16.007.014.022 mVUUU16.068.45 4求表面张力系数 mNDDBU/10959.6)12.3392.34(071.31416.368.45)(221 %4.0)12.3392.34(03.003.0)68.4516.0()()(222222122212DDUUDDUr mNUUr/108.2%4.010959.642 mNU /10)028.0959.6(2 5与理论值比较，求相对误差。 水温： t = 27.0 ， mN /1015.72理 %7.2%10015.7959.615.7%100 理理E
