[填空题]
A student measures a length five times. All op7 4u)nfhx.rl )g5m fxj9hq r5f v. oz;u7v/ey,s vs9 eythe 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