The buoyancy of an object is dictated by its density. So let us calculate for density, where:density = mass / volume Calculate the volume first of a solid cube:volume = (6 cm)^3 = 216 cm^3 = 216 mL Therefore density is:density = 270 g / 216 mLdensity = 1.25 g / mL Therefore this object will float in the layer in which the density is more than 1.25 g / mL.
At the eutectic composition, an alloy can solidify at a constant temperature : TRUE . this is because at eutectic composition the type of reaction that takes place there is invariant reaction in its thermal equilibrium
For effective dispersion strengthening, the dispersed phase should be needle-like, as opposed to round : FALSE. because the rounded shape will not cause a crack.
Intermetallic compounds are usually hard and brittle : TRUE. because Intermetallic compounds prevents dislocation movements and this makes them brittle and hard
For the effective dispersion and strengthening, the dispersed phase should be continuous : FALSE. this is because the dispersed precipitate must be small and not continuous
Stoichiometric intermetallic compounds exist over a range of compositions : FALSE
Faster solidification results in smaller interlamellar spacing : TRUE
