A cube of a certain material has sides of length 12 cm. In a tank filled with water and oil, it floats at the water/oil interface with 72% of the cube in the water. What is the density of the cube? a. Sketch the situation, defining all your variables.

b. What physics equation(s) will you utilize in order to solve this problem? For each equation you list, give a justification for why it applies to this situation.

c. Apply your equation(s) to solve the problem as an algebraic expression(s).

d. Calculate your numerical answer(s). Show the units of your answer(s), and how you got them.