A Molecule of Roughly Spherical Shape Has a Mass of 6.10

Multiple Choice

A molecule of roughly spherical shape has a mass of 6.10 × 10^-25 kg and a diameter of 0.70 nm. The uncertainty in the measured position of the molecule is equal to the molecular diameter. What is the minimum uncertainty in the speed of this molecule? ( = 1.055 × 10^-34 J ∙ s)

A) 0.12 m/s
B) 1.2 m/s
C) 12 m/s
D) 0.012 m/s
E) 0.0012 m/s