Question

The volume of a plastic covered sealed box is 350 cm³ and the box has a mass 500 g. Will the box float on water or sink in water? what will be the mass of water displaced by the box? 

Answer 1

Given:
Volume of box = 350 cm³
Mass of box = 500 g
Density of object = `"Mass of Object"/"Volume of Object" = 500/350` = 1.43 g/cm³

Now, we know density of water = 1 g/cm³
Since, density of box > density of water, therefore the object is going to sink in water.
Now, volume of liquid displaced = Volume of the object = 350 cm³

⇒ `"Mass of liquid displaced"/"Density of liquid displaced" = 350   "cm"^3`

⇒ Mass of liquid = 350 × 1 = 350 g