实验报告固体密度的测量

测量铜圆柱体直径、高度数据记录测量值/次数12345678910平均值标准差直径d/mm13.97513.97513.99013.97213.98613.97013.98013.98513.98213.97013.9790.002252高度h/mm20.1020.0820.1020.0820.1020.0820.1020.0920.1020.1020.090.003Pg/cnT38.8488.8578.8298.8618.8348.8638.8428.8408.8398.8558.8470.0036950=翳户847（9/切3）夕测量一夕理论夕测量一夕理论P理论夕测量一夕理论P理论x100%=夕测量一夕理论P理论x100%=8.847-8.8508.850x100%=0.034%（注：以下不确定度的计算中质量口的单位为g、长度单位均用厘米（CH1））必⑷=Ed—d

n(ji—1)必⑷=Ed—d

n(ji—1)%i(h)=^h-h.———=3x10-4n[n—1)=2,252xIO-4=2,252xIO-4?0.002(cm)u£h)=2,252xIO-4?0.002(cm)u£h)=5=乙乙?O.OOl(cm)uKd)=-=乙乙=1x10-3=5.000xIO-4=5.000xIO-4u(h)==5.000xIO-4u(h)=+52(/1)u(d)=Ju/(d)+11/3)=1.044xIO-3=5.484xIO-4=8.847x=8.847x=8.847x2X5.484X10-1.398)=8.847x2X5.484X10-1.398)1.044x10-32.009=8.325X10-3测量圆管内外径数据记录测量值/次数12345678910平均值标准差内径d/mm10.4010.4010.3610.4010.3810.4410.4010.3610.4210.4410.400.008944外径D/nun13.0813.1013.1013.1213.1213.1013.1213.0813.0813.0813.100.005538高度h/mm19.7619.7619.7619.7819.7619.7619.7819.7619.8019.8019.770.005333Pg/cnT37.7417.6777.5787.6077.5657.7807.6077.6407.7777.8297.6790.030041P=嬴%T7.679(g/on3)P测量—P理论x100%=7.679-7.910P理论7.910x100%=2.920%Ua(d)=—dn(ji—1)uM)=ED-D

n(n—1)=8.944x10-4=5.538x10-475(d)=-乙0.002(cm)?5(D)=-

乙0.002(cm)=1x10-3=1x10"=1x10-3u(d)=Ju/(d)+11/3)u(D):Ju/On+u/Q)=1.342x10-3=1.143xIO-Ua(h)=Eh-h

n(ji—1)(h)=。必2(/1)+52(①1.133x10-3=5.333xIO-4〜仪(誓)2+(誓)?uB(h)=-乙0.002(cm)7.6792X1.342X10-31.0402x1.143X10-31.310.21.133X10-3、1.977测量值/次数铜圆柱铝圆柱不锈钢圆柱圆管石蜡ml/g27.2710.6317.307.567.71m2/g24.246.8615.106.60-0.72P=e巾pAg/cm-771]—11I28.9732.8117.8407.8510.912p（理论值）8.8502.6987.9107.9100.970E=°测量一。理论P理论x100%1.390%4.195%0.884%0.741%5.995%0.0243=1xIO-3流体静力称衡法(测小铁球密度)m22.62P=77Po=0s匚1.A。八x0.