[填空题]
A student measures a length five timeszh9 . c)g2x1q 68irpip-t,n o6 mqxcay. All ofehv3h7 ,r 2qyk-xsk d* the measurements lie between $18.8 \mathrm{~cm}$ and $19.2 \mathrm{~cm}$. What should the student quote as the absolute uncertainty in the length? The absolute uncertainty is $cm$ (please only input numerical value without units and without the $\pm$ symbol.)
Post time 2024-8-21 21:38:19