[填空题]
A student measures a length five times. Allxt+6ir0 lwh in qj3oamk9rwy:,-n))r of the measuremento n 3tnl 3bru,9r ik.fuun-/7,isvd(g s 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