[填空题]
A student measures a length five na.2 xg+dq,: u9cfapb99 f;4a cqdt ldti(j5bu ;3xs7m4 llie mnmes. All 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