The pressure increases by 1.0 x 104 N/m2 for every meter of depth beneath the surface of the ocean. At what depth does the volume of a Pyrex (bulk modulus 2.6 x 1010 N/m2) glass cube, 5.4 x 10-2 m on an edge at the ocean's surface, decrease by 6.0 x 10-10 m3

Given that,

Bulk modulus

Change in volume

Edge

The volume of the cube at the ocean's surface will be

Where, a = edge

Put the value into the formula

We need to calculate the change in pressure

Using formula of pressure

Put the value into the formula

The pressure increases by for every meter of depth

We need to calculate the depth

Using formula for depth

Hence,  The depth is 9.75 m.

the answer is a. hope this .