The Record for the Highest Speed Achieved in a Laboratory

Multiple Choice

The record for the highest speed achieved in a laboratory for a uniformly rotating object was 2.01 × 10³ m/s for a 0.15-m long carbon rod. What was the period of rotation of the rod?

A) 7.4 × 10^-5 s
B) 3.1 × 10^-4 s
C) 4.7 × 10^-4 s
D) 5.2 × 10^-3 s
E) 1.3 × 10^-3 s