1.

the volume of a plastic covered sealed box is 350cm3 and the box has a mass 500g will the box float on water or sinl in water ?what will be the mass of water displased by the box

Answer»

If the density of an object is GREATER than WATER ( 1 g / cm³ ) then that object will sink. If it is less than water's density, then the object will float.


Density = MASS / Volume


Volume of object = 350 cm³

Mass of object = 500 g


Density = 500 g / 350 cm³

Density = 1.42 g / cm³


Hence 1.42 > 1. This implies that the object will sink.


Mass of water displaced = Density of Water * Volume


=> Mass of water displaced = 1 g / cm³ * 350 cm³ = 350 g


Hence mass of water displaced = 350 g.



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