[填空题]
A student measures a length five times.4yut)1wfxcwpah )w7vz) 9 sj/ m:5n sd A2gef1p,)ac gw+muj f mt(y4 t7ll of 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