The density of a submarine cruising beneath the ocean surface has the same density as

Question

Quizplus · Accepted Answer

A submarine is designed to have neutral buoyancy, meaning that its weight is balanced with the weight of the water it displaces. Therefore, the density of the submarine is equal to the density of the water surrounding it, in this case, seawater. So, the correct choice is D - water. The other options are not correct since the crab, iron or a floating submarine would have a different density than water and would not be able to achieve neutral buoyancy.

The Density of a Submarine Cruising Beneath the Ocean Surface