Extracted text: A brass cube 6 in on a side weighs 67 lb. We want to hold this cube in equilibrium under water by attaching a light foam buoy to it. If the foam weighs 4.5 lb/ft³, what is the minimum required volume of the buoy? QUESTION # 2 Foam Water WF Wires connecting brass and foam Brass "B 3 OF 5 Fr FBB