A cube, one cm on an edge, is filled with pure water. As measured in a reference frame at rest relative to the side, the density of the water is exactly 1000.0 kg/m^3. The cube is now accelerated to a constant speed of .958c. What is the density of the water in the moving cube as measured in the same reference frame?

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26 Jul 2019

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As shown in the figure below, a wooden cube measuring 20.0 cm oneach side floats in water with 80.0% of its volume submerged.Suspended by a string below the wooden cube is a metal cube. Themetal cube measures 10.0 cm on each side and has a specific gravityof 6.00. This means that the density of the cube is 6.00 timeslarger than that of water, which we take to be 1000 kg/m3.

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