A cube has a density of 1900 kg/m 3 kg/m3 while at rest in the laboratory. What is the cube's density as measured by an experimenter in the laboratory as the cube moves through the laboratory at 92.0 %% of the speed of light in a direction perpendicular to one of its faces

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

b. latent learning (the word "latent" itself means something that exists but isn't obvious, only under certain conditions! )

hi there!

out of the two, (b) precision would be more reasonable.   however, both a and b could be pretty reasonable.

-awesomerepublic   : )