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# Empty Floating Tray

APPH12-FAPNJV

A tray made from a material with a specific gravity of $4.3$ is floating in pure water. What must be the average density of the tray and its contents for it to just float at the surface of the water?

A

$1000\ \mathrm{ Kg/m^3}$

B

$1\ \mathrm{ g/m^3}$

C

$0.23\ \mathrm{ Kg/m^3}$

D

$0.23\ \mathrm{ g/m^3}$