A solid cube of aluminum is 1.5cm on each edge. The density of aluminum is 2700kgm\(^{-1}\). Find the mass of the cube.
Density = \(\frac{\text{mass}}{\text{volume}}\)
Volume of solid cube = s\(^3\) = 1.5\(^3\) = 3.375cm\(^3\)
Density = 2700kgm\(^{-3}\) ⇒ 2.7gcm\(^{-3}\)
2.7 = \(\frac{\text{m}}{3.375}\)
mass of the cube = 2.7 x 3.375 = 9.1125g \(\approxeq\) 9.1g
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