Question

Salt water is more dense than fresh water. A ship floats in both fresh water and salt water. Compared to the fresh water, the volume of salt water displaced by the ship A.is less than the volume of fresh water. B.is greater than the volume of fresh water. C.is the same as the volume of fresh water. D.cannot be compared without knowing the mass & volume of the ship.

Answer 1

Buoyant force B = V * ρ volume * density

Since the buoyant force is the same in both cases (salt & fresh)

a smaller volume is required when the density of the displaced water is greater

(A) is correct