The acceleration of an object depends directly upon the net force acting upon the object, and inversely upon the mass of the object. As the force acting upon an object is increased, the acceleration of the object is increased. As the mass of an object is increased, the acceleration of the object is decreased.
The pressure at the depth h in the ocean is given by (Stevin's law)

where

is the atmospheric pressure
and

is the pressure exerted by the column of water of height h=4267 m, with

being the water density and

.
Substituting, we find

We want to convert this into atmospheres: we know that 1 atm corresponds to the atmospheric pressure at sea level, so

, therefore we just need to divide by this number:
Answer: 0.24g/ml
Explanation:
Given that:
Volume of water displaced = 23.5 ml
Mass of cork = 5.7 g
Density of the cork = ?
Recall that density is obtained by dividing the mass of a substance by the volume of water displaced.
i.e Density = Mass/volume
Density = 5.7g /23.5ml
Density = 0.24g/ml
Thus, the density of the piece of cork is 0.24g/ml