Answer:
4847.94844926 kg/m³
Explanation:
= Actual density of cube = 1900 kg/m³
= Density change due to motion
v = Velocity of cube = 0.92c
c = Speed of light = 
Relativistic density is given by

The cube's density as measured by an experimenter in the laboratory is 4847.94844926 kg/m³
The answer is in the question, it’s 9.69
Foolish, ambiguous question, with no correct answer, but at a wild guess, it MIGHT wobble about it own axis????
Answer:

Explanation:
From the question we are told that:
Length 
Mass 
Angular Velocity 
Generally the equation for Kinetic energy K.E is mathematically given by
