Answer :
36.9 kN is the weight of the water that this boat displaces when floating in salt water of density 1.10 × 10³ kg/m³.
The weight of the water displaced by a boat, according to Archimedes' principle, is equal to the weight of the boat itself.
Given:
Weight of water displaced in fresh water = 36.9 kN
The density of salt water is given as 1.10× 10³ kg/m³.
The boat will displace a smaller volume of salt water than fresh water due to the higher density, but the weight of the displaced water (and thus the buoyant force) will still match the weight of the boat. Therefore, the weight of the water displaced by the boat does not change regardless of the water's density.