Acube has a density of 1800 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 91.0 % of the speed of light in a direction perpendicular to one of its faces? you may want to review (pages 1040 - 1043) .

4341.44763 kg/m³

Explanation:

= Actual density of cube = 1800 kg/m³

= Density change due to motion

v = Velocity of cube = 0.91c

c = Speed of light =

Relativistic density is given by

The cube's density as measured by an experimenter in the laboratory is 4341.44763 kg/m³

i think it’s a. this is because if they measured the mass of something with a mass of 150g, then their final answer would have to be approximately 150g. though all of their answers are almost 150, rosa and tran have the closest answers (or the exact answer) to the accurate one.

b

explanation: