[单选题]
Suppose that the spehum6ob sa5r2 r3pdkq c5w /):run9j :yed of an electl b0z(;ol7urhykx y6:ron traveling 2000 m/s is known to an accuracy: zkrl yul y67(xho;b0 of 1 part in $10^5$ (i.e., within 0.001%). What is the greatest possible accuracy within which we can determine the position of this electron?
A. $2.9 \; mm$
B. $5.8 \; mm$
C. $8.7 \; mm$
D. $1.2 \; cm$
Post time 2024-1-22 00:52:27